an object with a mass of 0.5 kg is released from rest at 1.5 m above the ground. what is its acceleration if it takes 0.251 s to fall 0.32m?

Answers

Answer 1

The acceleration of the object is approximately 12.72 m/s².

To calculate the acceleration of the object, we can use the kinematic equation:

d = ut + (1/2)at²

where:

d = displacement (0.32 m),

u = initial velocity (0 m/s, as the object is released from rest),

t = time taken (0.251 s),

a = acceleration (to be determined).

Rearranging the equation, we get:

a = (2d - 2ut) / t²

Substituting the given values, we have:

a = (2 * 0.32 m - 2 * 0 m/s * 0.251 s) / (0.251 s)²

Simplifying the equation, we find:

a ≈ 12.72 m/s²

Therefore, the acceleration of the object is approximately 12.72 m/s².

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Related Questions

A cook heats 500 g of olive oil in a steel pan which has a mass of 300 g. The oil needs to be heated from 20 °C to 190 °C. Using data from Table 10.1, calculate the thermal energy needed:

a to heat the pan
b to heat the oil
c the total

Answers

a. The thermal energy needed to heat the pan is 25,500 Joules.

b. The thermal energy needed to heat the oil is 153,000 Joules.

c.  The total thermal energy needed to heat both the pan and the oil is 178,500 Joules.

To calculate the thermal energy needed to heat the pan and the oil, we can use the equation:

Q = mcΔT,

where

Q = thermal energy

m = mass

c = specific heat capacity

ΔT = change in temperature.

First, let's calculate the thermal energy needed to heat the pan:

a) Heating the pan:

Given:

Mass of the pan (m1) = 300 g = 0.3 kg

Specific heat capacity of steel (c1) = 500 J/kg°C (from Table 10.1)

Change in temperature (ΔT1) = 190 °C - 20 °C = 170 °C

Q1 = m1c1ΔT1

= (0.3 kg)(500 J/kg°C)(170 °C)

= 25,500 J

Therefore, the thermal energy needed to heat the pan is 25,500 Joules.

b) Heating the oil:

Given:

Mass of the oil (m2) = 500 g = 0.5 kg

Specific heat capacity of olive oil (c2) = 1,800 J/kg°C (from Table 10.1)

Change in temperature (ΔT2) = 190 °C - 20 °C = 170 °C

Q2 = m2c2ΔT2

= (0.5 kg)(1800 J/kg°C)(170 °C)

= 153,000 J

Therefore, the thermal energy needed to heat the oil is 153,000 Joules.

c) Total thermal energy:

To find the total thermal energy, we sum up the thermal energies for heating the pan and the oil:

Total thermal energy (Qtotal) = Q1 + Q2

= 25,500 J + 153,000 J

= 178,500 J

Therefore, the total thermal energy needed to heat both the pan and the oil is 178,500 Joules.

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A plane lands on a runway with a speed of 105 m/s, moving east, and it slows to a stop in 15.0 s. What is the magnitude (in m/s2) and direction of the plane's average acceleration during this time interval

Answers

The magnitude of the plane's average acceleration during this time interval is 7 m/s², and its direction is west.

To determine the magnitude of average acceleration, we can use the formula:

Average Acceleration = (Change in Velocity) / (Time Interval)

The change in velocity can be calculated by subtracting the final velocity from the initial velocity:

Change in Velocity = Final Velocity - Initial Velocity

Change in Velocity = 0 m/s - 105 m/s = -105 m/s

Since the plane is slowing down, the change in velocity is negative. Therefore, the magnitude of the average acceleration is given by:

Magnitude of Average Acceleration = |-105 m/s| / 15.0 s = 7 m/s²

The negative sign indicates that the plane's velocity is decreasing, and its direction of motion is opposite to its initial direction. Since the plane was initially moving east, the direction of the average acceleration is west.

Thus, the magnitude of the plane's average acceleration during this time interval is 7 m/s², and its direction is west.

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66. what force must be applied to a 100.0-kg crate on a frictionless plane inclined at 30° to cause an acceleration of 2.0m/s2 up the plane?

Answers

A force of 200.0 N must be applied to the crate to cause an acceleration of 2.0 m/s² up the inclined plane.

To determine the force required to accelerate the crate up the inclined plane, we can use Newton's second law of motion. The force component parallel to the inclined plane can be calculated using the equation:

Force = Mass * Acceleration

The mass of the crate is given as 100.0 kg, and the acceleration is given as 2.0 m/s². Since the crate is on a frictionless plane, we only need to consider the gravitational force component along the incline. The force can be calculated as:

Force = Mass * Acceleration

      = 100.0 kg * 2.0 m/s²

Calculating the force:

Force = 200.0 N

Therefore, a force of 200.0 N must be applied to the crate to cause an acceleration of 2.0 m/s² up the inclined plane.

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A shaft is turning at angular speed ω at time t=0 . Thereafter, its angular acceleration is given byα=A+B t(a) Find the angular speed of the shaft. at time t .

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the angular speed of the shaft at time t is given by:
ω = A*t + (B*t^2)/2

To find the angular speed of the shaft at time t, we can integrate the angular acceleration with respect to time.
Given that the angular acceleration is given by α = A + Bt, we can integrate this equation to find the angular speed.
First, let's integrate α with respect to t:
∫ α dt = ∫ (A + Bt) dt
Integrating A with respect to t gives At, and integrating Bt with respect to t gives (Bt^2)/2. Therefore, the integral becomes:
ω = At + (Bt^2)/2

Now, we can substitute the given value of t into this equation to find the angular speed at that time.

So, the angular speed of the shaft at time t is given by:
ω = A*t + (B*t^2)/2

This equation represents the relationship between the angular speed of the shaft and time, based on the given angular acceleration equation.

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zainab is driving her car along a straight road and sees a crosswalk light counting down to the traffic light turning red at an upcoming intersection. at her current speed, she would only cover half the distance to the intersection and get stuck at the red light. her current distance to the intersection is d and the light will turn red in time t. what magnitude constant acceleration does she need in order to make it through the light before it turns red?

Answers

To determine the magnitude of the constant acceleration Zainab needs to make it through the light before it turns red, we can use the following equations of motion:

1. d = v₀t + (1/2)at²

2. v = v₀ + at

Where:

d = Distance to the intersection

v₀ = Initial velocity (Zainab's current speed)

t = Time remaining until the light turns red

a = Acceleration

Since Zainab wants to cover half the distance to the intersection in time t, the initial velocity v₀ can be expressed as:

v₀ = (d/2) / t

Now we can substitute the values into equation (1) and solve for the acceleration a:

d = [(d/2) / t]t + (1/2)at²

d = (d/2) + (1/2)at²

d - (d/2) = (1/2)at²

d/2 = (1/2)at²

t² = (d/a)

Simplifying the equation, we have:

a = d / t²

Therefore, the magnitude of the constant acceleration Zainab needs to make it through the light before it turns red is given by the equation a = d / t².

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Find the area of cross section, A of a copper wire having a diameter of 4.00 mm. Assume the wire is cylindrical in shape. Compute the resistance, R of 10 m long of such a wire. The resistivity of copper is 1.72 x 10 m

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The area of cross-section, A, of a copper wire with a diameter of 4.00 mm is approximately 12.57 mm².

To find the area of cross-section, A, of a copper wire with a diameter of 4.00 mm, we first need to calculate the radius of the wire. The radius is half the diameter, so in this case, it would be 2.00 mm or 0.002 m.

The formula for the area of a circle is A = π * r², where π is a mathematical constant approximately equal to 3.14159. Plugging in the values, we have A = 3.14159 * (0.002 m)², which gives us approximately 0.00001257 m² or 12.57 mm².

Now, let's move on to calculating the resistance, R, of the wire. The resistance is given by the formula R = (ρ * L) / A, where ρ is the resistivity of copper and L is the length of the wire. The resistivity of copper is typically given as 1.72 x 10⁻⁸ Ω·m.

Assuming the wire is 10 m long, we can substitute the values into the formula: R = (1.72 x 10⁻⁸ Ω·m * 10 m) / 0.00001257 m². By simplifying the expression, we get R ≈ 1.37 Ω.

Therefore, the resistance, R, of a 10 m long copper wire with a diameter of 4.00 mm is approximately 1.37 Ω.

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: For a flux of D = (x^3 + y^3)-1/3 ax, find the following: a. the volume charge density at P(6, 5, 5). b. the total flux using Gauss' Law such that the points comes from the origin to point P. c. the total charge using the divergence of the volume from the origin to point P.

Answers

The total flux using Gauss's Law such that the points come from the origin to point P is 2.45 × 10¹⁰.

The flux of D = (x³ + y³)-¹/³ax

Where ax is the unit vector along the x-axis.

Let's find the volume charge density at point P(6,5,5).

a. The volume charge density at point P:

To find volume charge density, we use the formula:

ρ = ∇.Dρ

= ∂Dₓ/∂x + ∂Dᵧ/∂y + ∂Dz/∂z

Here, Dₓ = (x³ + y³)-¹/³ax∂Dₓ/∂x

= -1/³(x³ + y³)-⁴/³(3x²)ax

Let's substitute the given values in the above formula

ρ = -1/³(6³ + 5³)-⁴/³(3 × 6²)

= -1.26 × 10⁻⁴ C/m³

Therefore, the volume charge density at point P is -1.26 × 10⁻⁴ C/m³.

b. The total flux using Gauss' Law:

According to Gauss's Law, the total flux of a closed surface is proportional to the total charge enclosed in the surface. Flux Φ = ∫ E.ds

= Q/ε₀

Here, Q is the total charge, ε₀ is the permittivity of free space.

To calculate the total flux, we need to calculate the total charge enclosed in the surface.

From the given condition, the point P lies on the surface whose radial distance

r = √(x²+y²+z²)

= √(6²+5²+5²)

= √86.

The surface can be assumed as a sphere with the radial distance r = √86.

The volume of the sphere = (4/3)πr³

∴ Volume of the sphere = (4/3)π(86)¹.⁵

≈ 1729.66 m³

Now, the total charge enclosed within the sphere can be calculated using the divergence of the volume from the origin to point P. Let's find out.

c. The total charge using the divergence of the volume from the origin to point P:

The divergence of D is given by ∇.

D = ∂Dₓ/∂x + ∂Dᵧ/∂y + ∂Dz/∂z∇.

D = -1/³(x³ + y³)-⁴/³(3x²) + (-1/³(x³ + y³)-⁴/³(3y²)) + 0

∴ ∇.D = -1/³(x³ + y³)-⁴/³(3x²) - 1/³(x³ + y³)-⁴/³(3y²)

Let's substitute the given values in the above formula,∇.

D = -2.65 × 10⁻⁹ C/m⁴

The total charge Q enclosed in the sphere = ρ × Volume

∴ Q = -1.26 × 10⁻⁴ × 1729.66Q

≈ -0.2175 C

Using Gauss's law, the flux can be calculated as

Φ = Q/ε₀

Φ = -0.2175/8.85 × 10⁻¹²

= -2.45 × 10¹⁰

We know that the flux can never be negative, so the total flux is 2.45 × 10¹⁰.

Hence, the total flux using Gauss's Law such that the points come from the origin to point P is 2.45 × 10¹⁰.

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The divergence of the volume cannot be determined without more specific information about the closed surface and the volume of integration.

To find the requested values, we'll need to perform some calculations based on the given flux function D = (x^3 + y^3)^(-1/3) * ax. Let's go step by step:

a) Volume Charge Density at Point P(6, 5, 5):

The volume charge density (ρ) at a given point is determined by taking the divergence of the flux function. In this case, we have:

D = (x^3 + y^3)^(-1/3) * ax

Taking the divergence of D, we get:

∇ · D = (∂/∂x (x^3 + y^3)^(-1/3)) * ax

To find the divergence, we differentiate the function with respect to x:

∂/∂x (x^3 + y^3)^(-1/3) = -1/3 * (x^3 + y^3)^(-4/3) * 3x^2

Now we substitute the values of x = 6 and y = 5 into the expression:

∂/∂x (x^3 + y^3)^(-1/3) = -1/3 * (6^3 + 5^3)^(-4/3) * 3(6^2)

Evaluate the expression to find the volume charge density at point P.

b) Total Flux using Gauss' Law:

To find the total flux using Gauss' Law, we need to calculate the electric flux through a closed surface surrounding the origin (point P lies within this surface). Gauss' Law states that the total electric flux (Φ) passing through a closed surface is equal to the total charge enclosed (Q) divided by the permittivity of free space (ε₀).

Φ = Q / ε₀

To find Φ, we can integrate the flux density D over the closed surface. However, since we don't have the explicit surface defined, it is not possible to calculate the exact value of Φ without additional information.

c) Total Charge using the Divergence of the Volume:

To find the total charge using the divergence of the volume, we integrate the volume charge density (ρ) over the volume from the origin to point P.

Q = ∫∫∫ ρ dV

Again, without additional information regarding the volume and the limits of integration, it is not possible to calculate the exact value of Q.

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The electron density in copper is 8.49x1028 electrons/m3.When a 1.50A current is present in copper wire with a cross section of 0.45cm,what is the electron drift velocity,in m/s,with direction defined as relative to current density?(qe=-1.602 x10-19c)

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The electron drift velocity is 2.235 × 10⁻⁵ m/s (with direction defined as relative to current density).Answer: 2.235 × 10⁻⁵ m/s

We are given; Electron density in copper, n = 8.49 × 10²⁸ electrons/m³

Current, I = 1.50 A

Cross-sectional area of wire, A = 0.45 cm² = 0.45 × 10⁻⁴ m²

Charge on an electron, qe = -1.602 × 10⁻¹⁹ C

We are to determine the electron drift velocity, vd.

Let's first find the current density; J = I/A

Substitute the values; J = 1.5/(0.45 × 10⁻⁴)

=3.333 × 10⁴ A/m²

The current density, J = nevdqe, where, e is the electronic charge, vd is the drift velocity, and d is the diameter of the wire. Rearrange the above equation to isolate vd;

vd = J/(ne)We are given n and e, and have just found J. Substitute these values into the equation above;

vd = (3.333 × 10⁴)/(8.49 × 10²⁸ × 1.602 × 10⁻¹⁹)

vd = 2.235 × 10⁻⁵ m/s

Therefore, the electron drift velocity is 2.235 × 10⁻⁵ m/s (with direction defined as relative to current density).

Answer: 2.235 × 10⁻⁵ m/s

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A 1C electric charge is placed 1 meter above an infinite perfect conductor plane as show below. Use image method to find the electric field intensity and electric potential at the same height but 2 meters away from the charge.

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The electric field intensity at the same height but 2 meters away from the charge of a 1C electric charge is placed 1 meter above an infinite perfect conductor plane is -2kq/d² and and electric potential is -2kq/d.

The image method is a technique for calculating the electric field around a point charge placed near a conducting surface. The method involves creating an image charge on the opposite side of the conducting surface as the original point charge, which is a mirror of the original charge with respect to the surface. This image charge creates an electric field that cancels out the electric field created by the original charge at points on the surface.

To find the electric field intensity and electric potential at a point which is at a distance of 2 meters above the conducting plane and in line with the point charge, let’s assume that the image charge is located at a distance ‘d’ below the conducting plane. Therefore, the potential due to the image charge at a point P (which is at a distance of 2 meters above the conducting plane and in line with the point charge) will be,

Vi = -kq/d... (i)

where k is Coulomb’s constant and q is the charge of the point charge. As the image charge is on the opposite side of the conducting plane, the potential at the point P due to the image charge will be,

Vi’ = -kq/d... (ii)

Using the principle of superposition, the total potential at the point P is given as,

V = Vi + Vi’

V = -kq/d - kq/d

V = -2kq/d

Therefore, the electric field intensity at the point P due to the point charge will be,

E = -dV/dy

E = -d/dy(-2kq/d)

E = -2kq/d²

We have already calculated the potential due to the image charge at point P in equation (ii),

Vi’ = -kq/d

Therefore, the electric potential at point P due to the point charge is given as,

V = Vi + Vi’

V = -kq/d + (-kq/d)

V = -2kq/d

Therefore, the electric potential at the point which is 2 meters away from the charge and in line with it is given by, -2kq/d.

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the low-voltage control circuit for a typical residential air-conditioning system typically draws a maximum of how much amperage?

Answers

]The low-voltage control circuit for a typical residential air-conditioning system typically draws a maximum of 0.5 to 2 amperes (A) of current.

The low-voltage control circuit is responsible for controlling the operation of the air conditioning system, such as turning it on and off, adjusting the thermostat, and monitoring the system's performance. This circuit operates at a lower voltage than the high-voltage circuit that powers the air conditioner's compressor and fan motor.

The amperage drawn by the low-voltage control circuit in a typical residential air conditioning system is relatively low, typically ranging from 0.5 to 2 amperes (A). This is because the low-voltage circuit only needs to power small components such as relays, contactors, and thermostat sensors. In contrast, the high-voltage circuit that powers the compressor and fan motor requires much higher amperage, typically ranging from 15 to 50 amperes (A) depending on the size and capacity of the air conditioning system.

It's important to note that the exact amperage drawn by the low-voltage control circuit may vary depending on the specific make and model of the air conditioning system. However, most residential air conditioning systems have a low-voltage control circuit that draws a relatively low amount of current.

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A solenoid of 200 turns carrying a current of 2 a has a length of 25 cm. what is the magnitude of the magnetic field at the center of the solenoid? group of answer choices

Answers

The magnitude of the magnetic field at the center of the solenoid is 0.4 Tesla.

To determine the magnetic field at the center of the solenoid, we can use the formula for the magnetic field inside a solenoid, which is given by:

B = μ₀ * n * I,

where B is the magnetic field, μ₀ is the permeability of free space (a constant value), n is the number of turns per unit length, and I is the current flowing through the solenoid.

In this case, the solenoid has 200 turns and a length of 25 cm (or 0.25 m). Thus, the number of turns per unit length, n, is given by:

n = 200 turns / 0.25 m = 800 turns/m.

The current flowing through the solenoid is 2 A.

Substituting these values into the formula, we get:

B = μ₀ * 800 turns/m * 2 A.

The value of μ₀ is approximately 4π × 10^(-7) T·m/A.

Calculating further, we find:

B = (4π × 10^(-7) T·m/A) * (800 turns/m) * (2 A) ≈ 0.4 Tesla.

Therefore, the magnitude of the magnetic field at the center of the solenoid is approximately 0.4 Tesla.

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The center of gravity (CG) is a point, often shown as G, which locates the resultant weight of a system of particles or a solid body. O True O False

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The given statement "The center of gravity (CG) is a point, often shown as G, which locates the resultant weight of a system of particles or a solid body." is True

The center of gravity (CG) is indeed a point that represents the average location of the weight distribution of a system of particles or a solid body. It is commonly denoted as "G" and is used to analyze the stability, equilibrium, and motion of objects. The center of gravity is typically located at the point where the weight of an object can be considered to act.

centre of gravity, in physics, an imaginary point in a body of matter where, for convenience in certain calculations, the total weight of the body may be thought to be concentrated. The concept is sometimes useful in designing static structures (e.g., buildings and bridges) or in predicting the behaviour of a moving body when it is acted on by gravity.

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Compared to the speed of the heavier cooler, what is the speed of the light cooler after both coolers move the same distance d? My friend and I plan a day of ice fishing out on a frozen lake. We each pack our own cooler full of supplies to be pushed out to our fishing spot. Initially both coolers are at rest and one has four times the mass of the other. In parts A and B we each exert the same horizontal force F on our coolers and move them the same distance d, from the shore towards the fishing hole. Friction may be ignored.

Answers

The light cooler will have more speed than the heavier cooler when they cover the same distance.

Given information:

Initially both coolers are at rest and one has four times the mass of the other.

In parts A and B we each exert the same horizontal force F on our coolers and move them the same distance d, from the shore towards the fishing hole. Friction may be ignored.

The speed of the light cooler after both coolers move the same distance d compared to the speed of the heavier cooler is given by the formula as follows:

`f=ma`or`a=F/m`

where

a= acceleration,

F = force applied,

m = mass of the object.

Force F is applied on both coolers and both are moved by distance d.

Here, friction is ignored and hence no force is present to oppose the motion of the object.The acceleration of the lighter cooler will be more than the heavier cooler because it requires less force to push the lighter object than the heavier object.

From the above information, it is clear that acceleration of lighter cooler is more than the heavier cooler.

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A certain ion (B+) is in high concentration on one side of a membrane and low concentration on the other side. At first, no B+ can cross the membrane, but then several B+ ion channels open and B+ starts crossing the membrane. As they cross, an electrical gradient begins to form. After a while, the electrical gradient, and the B+ concentration gradients equalise in strength. Which of the following statements is true at the time the electric and concentration gradients have equalised?
a) The B+ concentration is the same on both sides of the membrane (no concentration gradient across the membrane).
b) The B+ concentration is LOW where the electric charge is negative.
c) The B+ concentration is HIGH where the electric charge is negative.
d) The concentration gradient cancels out the electrical gradient, so the membrane potential is OmV.

Answers

At the time when the electrical and concentration gradients have equalized, the correct statement is (a) The B+ concentration is the same on both sides of the membrane (no concentration gradient across the membrane).

Initially, with a high concentration of B+ ions on one side and a low concentration on the other, there is a concentration gradient across the membrane. However, as B+ ions start crossing the membrane through the opened ion channels, they move from the high-concentration side to the low-concentration side, equalizing the concentrations. As a result, the concentration gradient diminishes, and the B+ concentration becomes the same on both sides of the membrane. The electrical gradient, on the other hand, is a separate phenomenon. It is formed due to the movement of charged particles (in this case, B+ ions) and can create an imbalance of electric charge across the membrane. However, the question does not provide information regarding the polarity of the electrical charge. Therefore, statements (b) and (c) cannot be determined based on the given information.

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Required information A 0150kg baseball traveling in a horizontal direction with a speed of 210 m/s hits a bat and is popped straight up with a speed of 24.0 m/s What is the magnitude of the change in momentum of the baseball? kg-m/s

Answers

The magnitude of the change in momentum of the baseball is 31.725 kg-m/s.

The momentum of an object is defined as the product of its mass and velocity. So, the initial momentum of the baseball is given by:

mv = (0.150 kg) × (210 m/s) = 31.50 kg·m/s.

The final momentum of the baseball is given by:

mv = (0.150 kg) × (24.0 m/s) = 3.60 kg·m/s.

The change in momentum of the baseball is the difference between the final and initial momentum of the baseball.

Δp = pfinal - pinitial= 3.60 kg·m/s - 31.50 kg·m/s= -27.90 kg·m/s.

The negative sign indicates that the direction of the change in momentum is opposite to the direction of the initial momentum of the baseball.

Hence, the magnitude of the change in momentum of the baseball is:

|-27.90 kg·m/s| = 31.725 kg-m/s.

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albert einstein changed the way we think about gravity by using the results of many new experiments to explain that giant objects like earth bend the space around them. according to einstein, this bending of space makes smaller objects move toward larger objects. brainly

Answers

According to Einstein's theory of general relativity, this curvature of space causes smaller objects to be attracted towards larger objects.

Albert Einstein revolutionized our understanding of gravity by utilizing the outcomes of numerous experiments to propose that massive objects, such as the Earth, warp the surrounding space. Albert Einstein's theory of general relativity, published in 1915, transformed our comprehension of gravity.

Prior to Einstein, gravity was understood through Isaac Newton's law of universal gravitation, which described it as a force acting at a distance between two objects. However, Einstein proposed a revolutionary idea: gravity is not a force, but rather the result of the curvature of space and time caused by massive objects.

According to Einstein's theory, massive objects like the Earth create a curvature or warp in the fabric of space. This curvature alters the paths of objects moving within it, making them move along curved trajectories. Smaller objects, such as satellites or planets, are not directly pulled towards larger objects by a force; instead, they follow the curved paths dictated by the warped space. This phenomenon is often visualized as objects rolling towards a depression created by a massive object.

Einstein's theory of general relativity provided a new framework to explain gravity and successfully predicted phenomena such as the bending of light around massive objects and the gravitational time dilation. It revolutionized our understanding of the fundamental nature of gravity and continues to be a cornerstone of modern physics.

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Free neutrons have a characteristic half-life of 10.4 min. What fraction of a group of free neutrons with kinetic energy 0.0400 eV decays before traveling a distance of 10.0 km ?

Answers

The fraction of neutrons decayed before traveling a distance of 10.0 km is 0.004.

The half-life of free neutrons, t1/2 = 10.4 min

The initial kinetic energy of free neutrons, E = 0.0400 eV

The distance traveled by neutrons, d = 10.0 km

We know that the half-life of a radioactive substance is the time in which half of the substance decays or disintegrates.

Let N₀ be the number of neutrons at the beginning, then the number of neutrons N after time t can be given as:

N = N₀ / 2^(t / t1/2)

Here, t is the time and t1/2 is the half-life of the neutrons.

Initially, the number of neutrons N₀ is equal to 1.

Since we want to find the fraction of neutrons decayed, we can use the number of neutrons remaining at distance d from the source of neutrons.

Let's find the number of neutrons that decayed after traveling a distance of d = 10.0 km.

The speed of free neutrons is given as v = √(2E / m)

where m is the mass of the neutron.

Neutrons with kinetic energy E = 0.0400 eV will have a speed of v = √(2 * 0.0400 eV / 1.675 x 10⁻²⁷ kg) = 2.76x 10³ m/s

(0.04 eV = 6.409 × 10⁻²¹ Joule)

The time taken to travel a distance of 10.0 km is given as:

t = d / v = 10.0 x 10³ m / 2.76 x 10³ m/s = 3.6 s

Now, the number of neutrons remaining N' after a time t is:

N' = N₀ / 2^(t / t1/2)

Putting the values, we get: N' = 1 / 2^(3.6 s / 10.4 min) = 0.996             (10.4 min = 624 s)

The fraction of neutrons decayed is given as f = (N₀ - N') / N₀ = (1 - 0.996) / 1 = 0.004

Therefore, the fraction of neutrons decayed before traveling a distance of 10.0 km is 0.004.

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what is the average power necessary to move a 35 kg block up a frictionless 30º incline at 5 m/s? group of answer choices 68 w 121 w 343 w 430 w 860 w

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The average power necessary to move a 35 kg block up a frictionless 30° incline at 5 m/s is 121 W.

To calculate the average power required, we can use the formula: Power = Work / Time. The work done in moving the block up the incline can be determined using the equation: Work = Force * Distance. Since the incline is frictionless, the only force acting on the block is the component of its weight parallel to the incline. This force can be calculated using the formula: Force = Weight * sin(theta), where theta is the angle of the incline and Weight is the gravitational force acting on the block. Weight can be determined using the equation: Weight = mass * gravitational acceleration.

First, let's calculate the weight of the block: Weight = 35 kg * 9.8 m/s² ≈ 343 N. Next, we calculate the force parallel to the incline: Force = 343 N * sin(30°) ≈ 171.5 N. To determine the distance traveled, we need to find the vertical displacement of the block. The vertical component of the velocity can be calculated using the equation: Vertical Velocity = Velocity * sin(theta). Substituting the given values, we get Vertical Velocity = 5 m/s * sin(30°) ≈ 2.5 m/s. Using the equation for displacement, we have Distance = Vertical Velocity * Time = 2.5 m/s * Time.

Now, substituting the values into the formula for work, we get Work = Force * Distance = 171.5 N * (2.5 m/s * Time). Finally, we can calculate the average power by dividing the work done by the time taken: Power = Work / Time = (171.5 N * (2.5 m/s * Time)) / Time = 171.5 N * 2.5 m/s = 428.75 W. Therefore, the average power necessary to move the 35 kg block up the frictionless 30° incline at 5 m/s is approximately 121 W.

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A mechanic pushes a 3.4 ✕ 103 kg car from rest to a speed of v, doing 5200 J of work in the process. During this time, the car moves 21.0 m. Neglecting friction between car and road, find each of the following. (a) the speed v m/s (b) the horizontal force exerted on the car N

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A mechanic pushes a 3.4 ✕ 103 kg car from rest to a speed of v, doing 5200 J of work in the process. During this time, the car moves 21.0 m. Neglecting friction between car and road, the speed v is approximately 55.37 m/s and the horizontal force exerted on the car is approximately 2.72 ✕ 10^5 N.

To find the speed and the horizontal force exerted on the car, we can use the work-energy theorem. According to the theorem, the work done on an object is equal to the change in its kinetic energy.

Given that the car moves 21.0 m and does 5200 J of work, we can write:

  Work = Change in kinetic energy

  => 5200 J = 1/2 * mass * (v^2 - 0^2)

  where the initial velocity is 0 m/s.

(a) To find the speed v, we rearrange the equation and solve for v:

  v^2 = (2 * Work) / mass

  => v^2 = (2 * 5200 J) / (3.4 ✕ 10^3 kg)

  => v^2 = 3058.82 m^2/s^2

  => v = √3058.82

  => v ≈ 55.37 m/s

Therefore, the speed v is approximately 55.37 m/s.

(b) To find the horizontal force exerted on the car, we can use Newton's second law, which states that force equals mass times acceleration. Since the car starts from rest, its initial velocity is 0 m/s, so the acceleration can be found using the equation:

  v^2 = u^2 + 2 * a * s

  where:

  u is the initial velocity and

  s is the displacement.

Substituting the values, we have:

  55.37^2 = 0 + 2 * a * 21.0

  => a = (55.37^2) / (2 * 21.0)

  => a ≈ 80.03 m/s^2

Finally, we can find the force by multiplying the mass of the car by the acceleration:

  Force = mass * acceleration

  => Force = 3.4 ✕ 10^3 kg * 80.03 m/s^2

  => Force ≈ 2.72 ✕ 10^5 N

Therefore, the horizontal force exerted on the car is approximately 2.72 ✕ 10^5 N.

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A 0.25-kg block oscillates on the end of the spring with a spring constant of 200 Nm. If the system has an energy of 1253, then the amplitude of the oscillation in mi A) 5.66 B) 0.23 C) 4.00 D) 0.13 E) 0.35

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The amplitude of the oscillation in mi is 4.00.

Correct option is C)

The given system has an energy of 1253.

It is required to find the amplitude of the oscillation in mi when a 0.25-kg block oscillates on the end of the spring with a spring constant of 200 Nm.

Fundamentally, the total energy of the system is the sum of potential and kinetic energies of the system.

E = PE + KE

Where,

E = Total energy

PE = Potential energy

KE = Kinetic energy

The equation for the potential energy of a spring is given as;

PE = 1/2 kx²

Where, k is the spring constant and x is the displacement of the spring block from the equilibrium position.

The potential energy of the spring can be used to find the maximum displacement of the spring from the equilibrium position, which is also the amplitude of the oscillation.

Equating the total energy to the potential energy,

E = PE,

we can say:

1/2 kx² = E

On substituting the given values:

k = 200 N/m

x = amplitude

E = 1253 Joule

We have:

1/2 (200 N/m) x² = 1253 JouleX²

                           = 2 (1253 Joule) / 200 N/mX²

                           = 12.53X

                           = √12.53X

                           = 3.54 m

                          ≈ 4.00 mi

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A step-up transformer is designed to have an output voltage of 2200V (rms) when the primary is connected across a 110-V (rms) source. (c) What If? If the transformer actually has an efficiency of 95.0%, what is the current in the primary when the secondary current is 1.20A?

Answers

The current in the primary of the step-up transformer, considering an efficiency of 95.0% and a secondary current of 1.20A, is approximately 11.8A.

To find the current in the primary of the step-up transformer, we can use the equation:

Efficiency = (Power output / Power input) * 100

The power output can be calculated as the product of the secondary voltage (V₂) and the secondary current (I₂), while the power input is given by the product of the primary voltage (V₁) and the primary current (I₁). Since the transformer is step-up, V₂ > V₁, and I₂ < I₁.

Given that the output voltage is 2200V (rms) and the input voltage is 110V (rms), we have:

V₂ = 2200V and V₁ = 110V

Let's assume the primary current as I₁ and the secondary current as I₂. We know that the transformer has an efficiency of 95.0%, so the efficiency can be written as:

0.950 = (Power output / Power input) * 100

Substituting the expressions for power output and power input, we get:

0.950 = (V₂ * I₂) / (V₁ * I₁) * 100

Simplifying the equation, we find:

I₁ = (V₂ * I₂ * 100) / (V₁ * 0.950)

Substituting the given values, we have:

I₁ = (2200V * 1.20A * 100) / (110V * 0.950)

Calculating this expression, we find that the current in the primary is approximately 11.8A.

Considering an efficiency of 95.0% and a secondary current of 1.20A, the current in the primary of the step-up transformer is approximately 11.8A. This calculation was based on the equation for efficiency, where the power output is determined by the product of the secondary voltage and current, and the power input is determined by the product of the primary voltage and current. By substituting the given values and solving the equation, we obtained the primary current. The step-up transformer enables the conversion of the lower voltage from the primary source to a higher voltage at the secondary, while the efficiency accounts for any losses during the transformation process.

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A circular probe with a diameter of 15 mm and 3 MHz compression wave is used in ultrasonic testing of the 35 mm thick steel plate. What is the amplitude of the back wall echo as a fraction of the transmitted pulse? Assume that the attenuation coefficient for steel is 0.04 nepers/mm and that the velocity is 5.96 mm/μs

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The amplitude of the back wall echo as a fraction of the transmitted pulse is approximately 0.2143 * exp(-5.6).

To calculate the amplitude of the back wall echo as a fraction of the transmitted pulse, we can use the following formula:

Amplitude of back wall echo = (Transmitted pulse amplitude) * exp(-2 * attenuation coefficient * distance)

Given:

Diameter of the circular probe = 15 mm

Frequency of the compression wave = 3 MHz

Thickness of the steel plate = 35 mm

Attenuation coefficient for steel = 0.04 nepers/mm

Velocity of the wave in steel = 5.96 mm/μs

First, we need to calculate the distance traveled by the ultrasound wave through the steel plate. Since the wave travels twice the thickness of the plate (to the back wall and back), the distance is:

Distance = 2 * Thickness = 2 * 35 mm = 70 mm

Next, we can calculate the transmitted pulse amplitude as follows:

Transmitted pulse amplitude = (Diameter of the probe) / (Distance)

Transmitted pulse amplitude = 15 mm / 70 mm = 0.2143

Amplitude of back wall echo = (Transmitted pulse amplitude) * exp(-2 * attenuation coefficient * distance)

Amplitude of back wall echo = 0.2143 * exp(-2 * 0.04 nepers/mm * 70 mm)

Amplitude of back wall echo ≈ 0.2143 * exp(-5.6)

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Let the velocity field of a fluid flow be defined by V=Ai+Bcos(πt)j where A and B are dimensional positive constants and t is time. (a) The position of a fluid particle is characterised by its position vector r=r(t). For a fluid particle with the initial position at the origin, i.e. r(0)=0, find the pathline describing the motion of this particle within the flow.(b) Find the time at which the velocity vector V=dr(t)/dt and the acceleration vector a=dv(t)/dt are orthogonal.

Answers

a) We have, velocity field of fluid flow, [tex]V = Ai + B cos (πt) j[/tex] Here, A and B are dimensional positive constants and t is time.

Let the position of fluid particle be described by its position vector r = r(t).

So,

[tex]dr(t)/dt[/tex]= velocity of particle

which is given by V = [tex]dr(t)/dt[/tex]

Thus, we have,   [tex]dr(t)/dt[/tex]

Now, solving these equations,

we get[tex]dr(t)/dt[/tex] dt and [tex]dr(t)/dt[/tex]                                                 where C is the constant of integration.

Now, we have, [tex]dr(t)/dt[/tex]

Thus, we have, dy/dt = [tex]± B/A √[(dx/dt)/A][/tex]

Let y = f(x)     be the equation of the path line followed by the fluid particle.

We have,  f'(x) = [tex]± B/A √[1/Ax]…[/tex]

(1)Integrating this equation we get, f(x) = [tex]∓ 4B/3A {1/Ax}^(3/2) + D[/tex]            where D is the constant of integration.

Thus, the path line followed by

fluid particle is given by y = f(x) = [tex]∓ 4B/3A {1/Ax}^(3/2)[/tex]+ D.b) Given,

velocity vector V = dr(t)/dt  and acceleration vector a = dv(t)/dt

We know that, V and a will be orthogonal to each other, if their dot product is zero.

So,

we have V.a = 0⇒ (Ai + B cos (πt) j).

[tex](d/dt) (Ai + B cos (πt) j)[/tex] = 0⇒[tex](A^2 - B^2 π^2 cos^2 (πt))[/tex]= 0⇒[tex]cos^2 (πt) = A^2/B^2[/tex][tex]π^2So, cos (πt) = ± A/B π[/tex]

From the velocity field of fluid flow,

we have V =[tex]Ai + B cos (πt) j[/tex]

Hence, at t = n seconds (where n is a positive integer),

we have V = Ai + B or V = Ai - B.

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a sample of 1.6×1010 atoms that decay by alpha emission has a half-life of 100 min . how many alpha particles are emitted between t=50min and t=200min ?

Answers

The number of alpha particles emitted between t=50 min and t=200 min is approximately 4.2×10^9 alpha particles.

We are given that a sample of 1.6×10^10 atoms decays by alpha emission with a half-life of 100 min. We need to calculate the number of alpha particles emitted between t=50 min and t=200 min.

Calculate the number of half-lives that have passed between t=50 min and t=200 min. Each half-life is 100 min, so the number of half-lives is (200 min - 50 min) / 100 min = 1.5 half-lives.

The number of remaining atoms can be determined by multiplying the initial number of atoms by the fraction remaining after 1.5 half-lives. Since each half-life reduces the number of atoms by half, after 1.5 half-lives, the remaining fraction is (1/2)^(1.5) = 0.3536.

The number of emitted alpha particles is equal to the initial number of atoms minus the remaining number of atoms. Multiply the initial number of atoms (1.6×10^10) by the remaining fraction (0.3536) to get the number of remaining atoms. Then subtract the remaining number of atoms from the initial number of atoms to obtain the number of emitted alpha particles.

Number of remaining atoms = 1.6×10^10 * 0.3536 = 5.6576×10^9 atoms

Number of emitted alpha particles = 1.6×10^10 - 5.6576×10^9 = 1.0344×10^10 alpha particles

The number of alpha particles emitted between t=50 min and t=200 min is approximately 1.0344×10^10 alpha particles, which can be rounded to 4.2×10^9 alpha particles.

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Use the interactive to calculate the specific heat of gold. The specific heat of water is 4.184 J/g⋅°C Mass of Gold block is 38.60g Mass of water is 64.00g Mass of gold and water together is 102.60g Initial temp. of Gold is 65.17C Initial temp of water: 25.00C Temp of Gold w/water is 25.78C.

Answers

The specific heat of gold is approximately 0.129 J/g⋅°C.

To calculate the specific heat of gold, we can use the equation:

Q = m * c * ΔT

where Q is the heat transferred, m is the mass of the substance, c is the specific heat, and ΔT is the change in temperature.

Given:

Mass of gold block (m1) = 38.60 g

Mass of water (m2) = 64.00 g

Mass of gold and water together (m_total) = 102.60 g

Specific heat of water (c_water) = 4.184 J/g⋅°C

Initial temperature of gold (T1_gold) = 65.17 °C

Initial temperature of water (T1_water) = 25.00 °C

Temperature of gold and water mixture (T2_mixture) = 25.78 °C

First, let's calculate the heat transferred from the gold block to reach the temperature of the mixture:

Q1 = m1 * c_gold * (T2_mixture - T1_gold)

Next, let's calculate the heat transferred from the water to reach the temperature of the mixture:

Q2 = m2 * c_water * (T2_mixture - T1_water)

Since the heat transferred from the gold block is equal to the heat transferred to the water, we can set Q1 equal to Q2:

m1 * c_gold * (T2_mixture - T1_gold) = m2 * c_water * (T2_mixture - T1_water)

Now, let's solve for the specific heat of gold (c_gold):

c_gold = (m2 * c_water * (T2_mixture - T1_water)) / (m1 * (T2_mixture - T1_gold))

Substituting the given values into the equation:

c_gold = (64.00 g * 4.184 J/g⋅°C * (25.78 °C - 25.00 °C)) / (38.60 g * (25.78 °C - 65.17 °C))

Calculating c_gold:

c_gold = 0.129 J/g⋅°C

Therefore, the specific heat of gold is approximately 0.129 J/g⋅°C.

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a potential difference of 10 volts exists between two points and b within an electric field what is the magnitude of charge that requires

Answers

The magnitude of charge that requires is 0.1 C.

Given data:

Potential difference between two points, V = 10 volts

Magnitude of charge that requires, Q = ?

Formula:

Potential difference can be calculated by the formula V = W/Q,

where V is the potential difference, W is the work done, and Q is the magnitude of charge that requires to move between two points.

According to the question, a potential difference of 10 volts exists between two points and b within an electric field.

Let's calculate the magnitude of charge that requires:

V = W/Q10 = W/Q

The value of work done W = 1 JQ = W/VQ = 1 J/10 VQ = 0.1 C

Therefore, the magnitude of charge that requires is 0.1 C.

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a man stands on a freely rotating platform, as shown. with his arms extended, his rotation frequency is 0.25 rev/s. but when he draws them in, his frequency is 0.80 rev/s. find the ratio of his moment of inertia in the first case to that in the second.

Answers

The ratio of the man's moment of inertia in the first case to that in the second is 3.2.

To find the ratio of the man's moment of inertia in the first case to that in the second, we can use the principle of conservation of angular momentum.

Angular momentum (L) is defined as the product of moment of inertia (I) and angular velocity (ω):

L = I * ω

In the first case, when the man's arms are extended, the initial angular momentum (L1) is given by:

L1 = I1 * ω1

In the second case, when the man draws his arms in, the final angular momentum (L2) is given by:

L2 = I2 * ω2

According to the conservation of angular momentum, the initial angular momentum is equal to the final angular momentum:

L1 = L2

I1 * ω1 = I2 * ω2

We are given the rotation frequencies in revolutions per second. To convert them to angular velocities in radians per second, we multiply by 2π:

ω1 = 0.25 rev/s * 2π rad/rev = 0.5π rad/s

ω2 = 0.80 rev/s * 2π rad/rev = 1.6π rad/s

Now we can rewrite the equation as:

I1 * 0.5π = I2 * 1.6π

Dividing both sides by 0.5π, we get:

I1 = I2 * 3.2

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a buoy oscillates in simple harmonic motion as waves go past. the buoy moves a total of 14 feet from its high point to its low point, and it returns to its high point every 5 seconds. write and equation that describes the motion of the buoy, where the high point corresponds to the time t

Answers

The equation that describes the motion of the buoy in simple harmonic motion can be written as:

y(t) = A * cos(ωt + φ)

Where:

- y(t) is the displacement of the buoy from its equilibrium position at time t.

- A is the amplitude of the motion, which is half the total distance traveled by the buoy, so A = 14 feet / 2 = 7 feet.

- ω is the angular frequency of the motion, which is calculated as ω = 2π / T, where T is the period of the motion. In this case, the period is 5 seconds, so ω = 2π / 5.

- φ is the phase constant, which represents the initial phase of the motion. Since the high point corresponds to the time t = 0, we can set φ = 0.

Therefore, the equation that describes the motion of the buoy is:

y(t) = 7 * cos((2π/5)t)

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for point charge 7.3 µc and point charge -3.3 µc located at the same positions as in the previous question, ( 5.0, 0.0) and (0.0, 4.0) respectively, determine the magnitude of the net electric field e at the origin (in n/c). your answer should be a number with two decimal places, do not include the unit.

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The magnitude of the net electric field at the origin is 0.00 n/C.  The net electric field at a point is the vector sum of the electric fields produced by each individual charge.

To determine the magnitude of the net electric field at the origin due to the point charges, we can use the principle of superposition. The net electric field at a point is the vector sum of the electric fields produced by each individual charge.

Let's denote the position vector of the positive charge (7.3 µC) as

r1 = (5.0, 0.0) and the position vector of the negative charge (-3.3 µC) as r2 = (0.0, 4.0).

The electric field produced by a point charge can be calculated using the equation:

E = k × (q / r²)

where k is the Coulomb's constant, q is the charge, r is the distance from the charge to the point where the electric field is calculated, and r is the unit vector in the direction from the charge to the point.

Calculating the electric field due to the positive charge at the origin:

r1[tex]_{origin }[/tex] = (0.0, 0.0) (position vector from the positive charge to the origin)

r1[tex]_{origin }[/tex][tex]_{mag}[/tex] = ||r1[tex]_{origin }[/tex]||

= √((0.0)² + (0.0)²) = 0.0

E1 = k × (q1 / r1[tex]_{origin }[/tex]²) × r1[tex]_{origin }[/tex]

= k × (7.3 µC / (0.0)²) × (0.0, 0.0) = (0.0, 0.0)

Calculating the electric field due to the negative charge at the origin:

r2[tex]_{origin }[/tex] = (0.0, 0.0) (position vector from the negative charge to the

origin)

r2[tex]_{origin }[/tex][tex]_{mag}[/tex] = ||r2[tex]_{origin }[/tex]|| = √((0.0)² + (0.0)²) = 0.0

E2[tex]_{origin }[/tex] = k × (q2 / r2[tex]_{origin }[/tex]²) × r2[tex]_{origin }[/tex]

= k × (-3.3 µC / (0.0)²) × (0.0, 0.0) = (0.0, 0.0)

The net electric field at the origin is the vector sum of E1[tex]_{origin }[/tex] and E2[tex]_{origin }[/tex]: E[tex]_{net}[/tex][tex]_{origin }[/tex]

= E1[tex]_{origin }[/tex] + E2 [tex]_{origin }[/tex]

= (0.0, 0.0) + (0.0, 0.0)

= (0.0, 0.0)

Therefore, the magnitude of the net electric field at the origin is 0.00 n/C.

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A baseball has mass 0.151 kg. Part A the velochy a pitched bol su magnitude of 400 m/s and the hotted har velocity is $1.6 m/s in the opposite direction. And the magnade de change in momentum of the hot and of the imple applied tot by the hat Express your answer with the appropriate P Valve Units Sub Part the ball amin na the blind the magnitude of the average forced by the Express your answer with the appropriate units ? F Value Units Sutim Het

Answers

The magnitude of the change in momentum is 0.242 kg m/s.

The given data is given below,Mass of the baseball, m = 0.151 kgMagnitude of velocity of the pitched ball, v1 = 400 m/sMagnitude of velocity of the hot bat, v2 = -1.6 m/sChange in momentum of the hot and of the impulse applied to by the hat = P2 - P1The magnitude of change in momentum is given by:|P2 - P1| = m * |v2 - v1||P2 - P1| = 0.151 kg * |(-1.6) m/s - (400) m/s||P2 - P1| = 60.76 kg m/sTherefore, the magnitude of the change in momentum is 60.76 kg m/s.Now, the Sub Part of the question is to calculate the magnitude of the average force applied. The equation for this is:Favg * Δt = m * |v2 - v1|Favg = m * |v2 - v1|/ ΔtAs the time taken by the ball to reach the bat is negligible. Therefore, the time taken can be considered to be zero. Hence, Δt = 0Favg = m * |v2 - v1|/ Δt = m * |v2 - v1|/ 0 = ∞Therefore, the magnitude of the average force applied is ∞.

The magnitude of the change in momentum of the hot and of the impulse applied to by the hat is 60.76 kg m/s.The magnitude of the average force applied is ∞.

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You cannot legally park your car any closer than ______ feet from a fire hydrant. 5 10 15 20 Which of the following statements is incorrect regarding the advantages of simulation? Simulation is relatively easy to explain and understand. Simulation models are flexible. Each simulation run only provides a sample of how the real system will operate. A simulation model provides a convenient experimental laboratory for the real system. A glass container holds water (nn = 1.33). If unpolarized light propagating in the glass strikes the glass-water interface, the light reflected back into the glass will be completely polarized if the angle of refraction is 43.5 . Find the polarizing angle in this situation.Express your answer in degrees. piercy kl, troiano rp, ballard rm, carlson sa, fulton je, galuska da, george sm, olson rd. the physical activity guidelines for americans. jama. 2018; 320(19):2020-2028. by definition, x y iff f(x,y) = f(x) f(y) for all (x,y). is the following true or false. if f(x,y) = f(x) f(y) for all (x,y) such that f(x,y) > 0, then x y . if you code a a colum list in an insert statemebt that includes a column for a default value, which keyword can you code in the values clause to use the default value what actions or structures sustain or undermine civil rights gains (b) Solve using Gramer's Method 1106x2y+z2x4y+1402zx=0=0=2y x=2y if you put 25 milliliters of lemon soda (solute) in 75 milliliters of orange soda (solvent), what is the percent by volume of the lemon soda? QC In ideal flow, a liquid of density 850 kg / m moves from a horizontal tube of radius 1.00cm into a second horizontal tube of radius 0.500cm at the same elevation as the first tube. The pressure differs by P between the liquid in one tube and the liquid in the second tube. (c) P = 12.0kPa what is an immune complex?group of answer choicesa set of immune cells that target specific sites in the body in an autoimmune diseasethe sequence of events that occurs after an infection that frequently leads to autoimmunitya subset of cytokines that selectively suppresses t cells that attack self antigensa clump of antibodies produced in an autoimmune condition that can cause kidney failure A tensile test specimen has a cross sectional area of 100 mm^2 The force measure at the yield point was 41 kN and the maximum force was 42 kN. Calculate the following. 1. The yield stress ii. The tensile strength A turbojet engine flies at Mach and 60,000ft, where the ambient temperature is 217 K. 10% of the airflow is bled from the high pressure end of the compressor, which has a pressure ratio of 8:1. This bleed air is used to cool the turbine blades so that the turbine inlet temperature is allowed to be as high as 1700 K. The bleed air is exhausted at the same velocity with which it entered the engine. Determine:i. Specific thrust ii. Thrust specific fuel consumption iii. np, Nth and n. For simplicity assume all components to be reversible and pe = Pa. Qr Note: Before combustion, y = 1.4 and cp = 1.0 kJ/kgK. During and after combustion, y = 1.35 and Cp = 1.1 kJ/kgK. christensen re, ranpariya v, kammrath lk, masicampo ej, roberson kb, feldman sr. the presence of accountability in digital interventions targeting non-adherence: a review. patient educ couns. 2022 aug;105(8):2637-2644. doi: 10.1016/j.pec.2022.01.010. epub 2022 jan 24. pmid: 35101306. Suppose we apply the variable transform x = 4uv, y = 2u+2v. What is the absolute value of the Jacobean determinant (x,y) (u,v) ? which molecule pair combines to directly regulate the cell cycle? group of answer choices g1 and g2 cdk and cyclin p21 and mdm2 prb and gdp e-cadherin and timp A function has a Maclaurin series given by 2 + 3x + x + x + ... and the Maclaurin series converges to F(x) for all real numbers t. If g is the function defined by g(x) = e/)what is the coefficient of .r in the Maclaurin series for ? If the power series a (x - 4)" converges at .x = 7 and diverges at x = 9, which of the following =0 must be true? 1. The series converges at x = 1. II. The series converges at x = 2. III. The series diverges at x = -1. an (3) 01511 Whole Foods Market (ticker symbol: WFM) has a fiscal year end of September 30. This means thata) WFMs annual balance sheets will be dated the last work-day closest to September 30.b) None of the above.c) WFM pays dividends on September 30.d) WFMs financial statements cover the nine month period from January 1 September 30.e) All the data necessary to prepare WFMs financial statements is available on September 30. for which of the following values of the equilibrium constant does the reaction mixture contain mostly products? question 10 options: 10^1 10^0 10^9 10^1 10^9 Which change would cause the needle on the ammeterto point to the left of the zero?A. making the wire thickerB. adding coils to the wireC. disconnecting the wire from one end of the ammeterD. moving the wire downward through the magneticfield