A heart pacemaker fires exactly 71
times a minute. Each time it fires, a 33.0 nF
capacitor is charged by a battery in series with a resistor to 0.732
of its full voltage. What is the value of the resistance
?

Answers

Answer 1

The value of the resistance is approximately 0.047 kΩ.

What is Resistance?

Resistance is a measure of how much a material or device opposes the flow of electric current through it. Resistance is typically denoted by the letter R and is measured in Ohms (Ω) in the International System of Units (SI).

We can use the formula for the charging of a capacitor through a resistor:

V = V_0 * (1 - e^(-t/RC))

where V_0 is the initial voltage, V is the final voltage, t is the time, R is the resistance, and C is the capacitance.

In this case, the capacitor is charged 71 times per minute, so the time between charges is:

t = 60 s / 71

= 0.845 s

The capacitor is charged to 0.732 of its full voltage, so the fraction remaining is:

1 - 0.732 = 0.268

0.268 = e^(-0.845/RC)

Solving for RC, we get:

RC = -0.845 / ln(0.268) ≈ 1.42 s

Since we know the capacitance C is 33.0 nF, we can solve for the resistance R:

RC = R * C

= 1.42 s * 33.0 nF

= 0.0468 ≈ 0.047 kΩ

Therefore, the value of the resistance is approximately 0.047 kΩ.

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Related Questions

The blood pressure in millimeters was measured for a large sample of people. The average pressure is 140 mm, and the sd of the measurements is 20 mm. The histogram looks reasonably like a normal curve. Use the normal curve to estimate the following percentages. Choose the answer that is closest to being correct.

Answers

Here are some possible percentages and their corresponding estimated z-scores:

Percentage of people with blood pressure below 120 mm: approximately 9.1% Estimated z-score: z = (120 - 140) / 20 = -1Percentage of people with blood pressure between 120 and 160 mm: approximately 68.3%Estimated z-scores: z1 = (120 - 140) / 20 = -1 and z2 = (160 - 140) / 20 = 1Percentage of people with blood pressure above 160 mm: approximately 9.1%Estimated z-score: z = (160 - 140) / 20 = 1

These percentages are based on the empirical rule, which states that for a normal distribution, approximately 68% of the data falls within one standard deviation of the mean, approximately 95% falls within two standard deviations, and approximately 99.7% falls within three standard deviations.

What is the empirical rule?

The empirical rule, also known as the 68-95-99.7 rule, is a statistical principle that describes the approximate distribution of data in a normal distribution. The rule states that:

Approximately 68% of the data falls within one standard deviation of the mean.Approximately 95% of the data falls within two standard deviations of the mean.Approximately 99.7% of the data falls within three standard deviations of the mean.

This rule is based on the assumption that the data is normally distributed, meaning that it follows a symmetrical bell-shaped curve. The empirical rule is widely used in statistics and is helpful in understanding the range of values that are likely to occur in a normal distribution.

It is important to note that the empirical rule provides only approximations and can vary in accuracy depending on the specific data and distribution being analyzed.

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Option: B, The percentage of people with blood pressure between 114 and 166 mm

What is the empirical rule?

The empirical rule, also known as the 68-95-99.7 rule, is a statistical principle that describes the approximate distribution of data in a normal distribution. The rule states that:

=> P(114 < x < 166)

=> P((114-140)/20 < z < (166-140)/20)

=> P(-1.3 < z < 1.3)

=> 0.8064

=> 80.6% rounded

option: D The percentage of people with blood pressure between 114 and 166 mm

=> P(140 < x < 166)

=> P((140-140)/20 < z < (166-140)/20)

=> P(0 < z < 1.3)

=> 0.4032

=> 40.3% rounded

option: C The percentage of people with blood pressure over 166 mm

=> P(x > 166)

=> P(z > (166-140)/20)

=> P(z > 1.3)

=> 0.0968

=> 9.7% rounded

This rule is based on the assumption that the data is normally distributed, meaning that it follows a symmetrical bell-shaped curve. The empirical rule is widely used in statistics and is helpful in understanding the range of values that are likely to occur in a normal distribution.

It is important to note that the empirical rule provides only approximations and can vary in accuracy depending on the specific data and distribution being analysed.

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Applying the maximum force you can exert, the heaviest box you can push at constant speed across a level floor with coefficient of kinetic friction μ has weight ω. Another box sits on a ramp that is inclined at an angle of β
above the horizontal. The coefficient of kinetic friction between the box and the ramp is μ.

If you apply the same magnitude maximum force, now parallel to the ramp, that you applied to the box on the floor, what is the heaviest weight box that you can push up the ramp at constant speed? (in both cases assume you can give enough extra push to get the box started moving)

Answers

The heaviest box you can push up the ramp at constant speed with a maximum force F is: ω = F / (μ sin(β))

Let F be the maximum force applied to the box, and let N be the normal force between the box and the ramp.

We can use the following equation to solve for the maximum weight of the box on the ramp:

F + μN = ω sin(β)

Where ω is the weight of the box, and β is the angle of the ramp.

hence, the heaviest box you can push up the ramp at constant speed with a maximum force F is:

ω = F / (μ sin(β))

What is speed?

Speed is the rate of change of an object's position over time, or the rate at which an object moves. Speed is a scalar quantity and is measured in metres per second (m/s).

Therefore, The heaviest box you can push up the ramp at constant speed with a maximum force F is: ω = F / (μ sin(β))

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Suppose that the two speakers in the figure below are separated by 2.50 m and are vibrating exactly out of phase at a frequency of 429
Hz. The speed of sound is 343 m/s. Does the observer at C observe constructive or destructive interfernce when his distance from
speaker B is (a) 1.15 m and (b) 2.00 m?

Answers

(a) The observed interference is destructive, as the phase difference between the waves exceeds π.

(b) The phase difference between the waves is less than π, so the observed interference is constructive.

What does observer observe at the positions?

When the observer is 1.15 m from speaker B, the path difference between the waves from the two speakers is:

Δx = x₂ - x₁ = 2.50 m - 1.15 m = 1.35 m

The corresponding phase difference is:

Δφ = 2π (Δx / λ) = 2π (1.35 m / (343 m/s / 429 Hz)) ≈ 4.16 rad

Since the two speakers are vibrating exactly out of phase, the phase difference between their waves is π, which is approximately 3.14 rad. Therefore, the observed interference is destructive, as the phase difference between the waves exceeds π.

When the observer is 2.00 m from speaker B, the path difference between the waves from the two speakers is:

Δx = x₂ - x₁ = 2.50 m - 2.00 m = 0.50 m

The corresponding phase difference is:

Δφ = 2π (Δx / λ) = 2π (0.50 m / (343 m/s / 429 Hz)) ≈ 1.55 rad

Since the phase difference between the waves is less than π, the observed interference is constructive.

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A ball strikes the floor for 0.0105 s and experiences a change in momentum of 1.52 kg·m/s. What is the force experienced by the ball?​

Answers

Answer:The concept of momemtum will be used to solve this question.A moving body's momemtum, which is generally equal to the product of the body's mass and velocity, is a quality that the body has as a result of its mass and motion.

Explanation:

Two blocks, M1 and M2, are connected by a massless string that passes over a massless pulley as shown in the figure. M2, which has a mass of 19.0 kg,
rests on a long ramp of angle =25.0∘.
Ignore friction, and let up the ramp define the positive direction.

If the actual mass of M1 is 5.00 kg and the system is allowed to move, what is the acceleration of the two blocks?

What distance does block M2 move in 2.00 s?

Answers

Two blocks, M1 and M2, are connected by a massless string that passes over a massless pulley . The distance the block M2 move is 3.44 m.

Calculating the problem:

Given:

M₂ = 19 kg

θ = 29 °

when the system is in equilibrium the net force on the system is zero

Fn = 0 = M₁ × g - M₂ × g × sin(θ)

M₁ = 19 × sin(29) kg

M₁ = 9.21 kg

the mass of M₁ is 9.21 kg

when M₁ = 5 kg

The acceleration of system , a = net force /effective mass

a = (M₂ × g × sin(theta) - M₁ × g )/(M₁ + M₂)

a = 9.81 × ( 19 × sin(29) - 5) /(19 + 5)

a = 1.72 m/s²

The acceleration of system is 1.72 m/s²

for t = 2 s

The distance moved by M₂ , s = 0 + 0.5 × a × t²

s = 0 + 0.5 × 1.72 × 2² m

s = 3.44 m

How much is distance?

While distance is the length of an object's path, displacement only refers to the distance between an object's starting point and its final location.

Meter (m) is the SI unit for distance. Centimeters (cm) can be used to measure short distances, and kilometers (km) can be used to measure long distances.

What is mass?

A body's mass is the amount of material it contains. The SI unit of mass, the kilogram (kg), is the kilogram. A definition of mass is: Volume x density = mass.

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The tires of a car make 73 revolutions as the car reduces its speed uniformly from 94.0 km/h to 60.0 km/h. The tires have a diameter of 0.84 m.

Part C: If the car continues to decelerate at this rate, how far does it go? Find the total distance.
Express your answer to three significant figures and include the appropriate units.

Answers

If the car continues to decelerate at this rate then the total distance of car is 324.91 meters.

What is decelerate?

When an object slows down, it undergoes deceleration, which is the opposite of acceleration. There are usually two ways that acceleration slows down. The first occurs when an object slows down by itself. Gravity, friction, or momentum loss could be to blame. The second is when the object is subjected to an external force, such as when a car driver applies the brakes or a pilot deploys the air brakes in an airplane. A journey that is both safe and successful requires deceleration, which is an essential component of movement.

When the vehicle revs at 73, then :

                       d₁ = R × θ

                        = 0.42×73×2× π

                               = 192.6 m

Using 2nd kinematic equation for distance traveled in next 16 sec:

                              θ₁ = wi × t + (1/2)× α ×t²

             θ₁ = 39.69 × 16 + (1/2) × (-2.5) × 16²

                                 = 315.04 rad

                 d₂ = R× θ₁

                        = 0.42× 315.04

                               = 132.31 m

So total stopping distance = 192.6 + 132.31

                                            = 324.91 m

Therefore, the total distance is 324.91 m.

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The figure showed a thin rod of length L and charge Q.
Find an expression for the electric potential a distance z away from the center of rod on the line that bisects the rod.
Give your answer in terms of L, Q, z and appropriate constants.

Answers

Expression for the electric potential a distance z away from the center of rod on the line that bisects the rod is [tex]V = k * Q / L * \int\limits {cos\theta / z \sqrt{(1 + L^2/4z^2 * tan^2\theta)} d\theta} \, dx[/tex].

The electric potential at a distance z from a point charge Q is given by:

V = k * Q / r

here

k is Coulomb constant and

r is distance from the point charge to the point.

For a thin rod of length L and charge Q, we can model it as a line of charge with linear charge density λ = Q/L. The electric potential at a distance z away from the center of the rod on the line that bisects the rod can be found by breaking the rod into infinitesimal charge elements and integrating the electric potential due to each element over the length of the rod.

Let's consider a small element of length dx located at a distance x from the center of the rod:-

[tex]dQ = \lambda * dx = Q/L * dx[/tex]

The displacement element to pt.:-

[tex]r = \sqrt{(x^2 + z^2)}[/tex]

The electric potential due to this element is:

[tex]dV = k * dQ / r = k * Q/L * dx / \sqrt{(x^2 + z^2)}[/tex]

Integrating this expression over the length of the rod, we get the total electric potential at a distance z away from the center of the rod on the line that bisects the rod:

[tex]V = \int\limits^(^-^L^/^2^)_L_/_2 {k * Q/L * dx / √\sqrt{(x^2 + z^2)}} \, dx[/tex]

To evaluate this integral,

[tex]u = x^2 + z^2, du/dx = 2x dx[/tex],

This can be further simplified:-

[tex]u = z^2 * tan^2\theta + L^2/4 * sec^2\theta[/tex]

[tex]V = k * Q / L * \int\limits {cos\theta / z \sqrt{(1 + L^2/4z^2 * tan^2\theta)} d\theta} \, dx[/tex]

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**DUE TOMORROW, NEED ANSWER ASAP**

NASA has asked you to evaluate a number of proposals for telescopes. These proposals include information about where the telescope would be built and what wavelengths it intends to observe at. Based only on these factors, evaluate whether NASA should consider funding each proposal. Justify your recommendations. (Some telescopes may have more than one "correct" answer depending on how you justify it).

a.) An ultraviolet telescope in space

b.) An optical telescope in a remote location in Michigan's upper peninsula

c.) A radio telescope in the Mojave desert in Arizona

d.) An x-ray telescope in the Andes mountains in Chile

e.) An optical telescope in space

Answers

An ultraviolet telescope in space.

What is a telescope?

The oldest known instance of a telescope is a patent for a refracting telescope that Middelburg spectacle maker Hans Lipperhey filed to the Dutch government in 1608. Although the true inventor is unknown, word of it quickly spread across Europe. After learning about it, Galileo constructed his own model and began making telescopic observations of celestial objects in 1609.Soon after the refracting telescope was created, it was being considered if the objective, or light-gathering element, might instead be a mirror. Due to the potential benefits of using parabolic mirrors—a reduction in spherical aberration and the absence of chromatic aberration—many designs and attempts to construct reflecting telescopes have been proposed. Isaac Newton created the first useful reflecting telescope in 1668.

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Prove that AxB = B.A

Answers

Unless A=B or unless either A or B is the empty set, AxB does not equal BxA. Students typically have no trouble understanding this because we define a cartesian product as an ordered pair, which implies that order would be important.

What is the parameter for solving cartesian product?

A plane's cartesian form is denoted by the formula ax + by + cz = d, where a, b, and c are the direction cosines normal to the plane and d is the distance from the origin to the plane.

If and only if the matching initial elements in both ordered pairs are the same, two ordered pairs are said to be equivalent. (ii) There will be mn elements in A B if there are m elements in A and n elements in B. This means that n(A B) if n(A) = m and n(B) = n.

Therefore, When the inner inverse fulfils P R (B ) B (A B) = 0 and (A B) B P R (B) = 0, it is implied that is closed and is the general solution.

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ASAP PLEASE HELP!!!!

A 3.0 kg object swings back and forth as a simple pendulum with a small amplitude. The potential energy U of the object as a function of distance x from its equilibrium position is shown above. This particular object has a total energy E of 0.4 J.
b) What is the farthest the object moves along the x-axis in the positive direction? Explain your reasoning.

Answers

The farthest that particular object will move along the x-axis in the positive direction is 0.2 m. This is the amplitude of the pendulum's motion.

What is potential energy?

Potential energy in physics is the energy that an item retains as a result of its position in relation to other objects, internal tensions, electric charge, or other elements.

Since the total energy of the object is given by E = U + K, where U is the potential energy and K is the kinetic energy, and the pendulum has a small amplitude, we can assume that the kinetic energy of the object is negligible.

Therefore, we have:

E = U = [tex](1/2)kx^2[/tex]

Khere k is the spring constant of the pendulum and x is the displacement from the equilibrium position.

So, the value of x can be:

x = sqrt(2E/k)

Substituting the given values, we have:

x = sqrt(2(0.4 J)/(20 N/m)) = 0.2 m

Thus, the farthest the object moves along the x-axis in the positive direction is 0.2 m.

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a cyclist while negotiating a circular path with speed of 20m/s is found to be bend at angel of 30° with vertical what is the radius of the circular path​

Answers

The minimum radius of the circular path for the cyclist traveling at a speed of 20 m/s and a tilt angle of 30° is approximately 17.32 meters.

What is the radius of the circular path​?

The formula for the minimum radius of a circular path for a cyclist traveling at a certain speed can be determined using the relationship between the speed, the angle of tilt, and the gravitational force acting on the cyclist.

The minimum radius of the circular path can be calculated using the formula:

r = (v^2) / gtan(θ)

where:

r = radius of the circular path (m)v = speed of the cyclist (m/s)g = acceleration due to gravity (9.8 m/s^2)θ = angle of tilt (30° in this case)

Plugging in the values, we get:

r = (20^2) / (9.8 x tan(30°))

r ≈ 17.32 m

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Question:
a) The amount of charge that passes through a copper wire in 5.4 s is 2.37 C. Find the current in the wire.
The wire has a charge carrier density of 7.5 × 10^26 /3
and a radius of 1.0 mm.
b) What is the cross sectional area of the wire?
c) What is the charge of the charge carriers in the copper wire?
d) Using all of the above, calculate the drift speed of the electrons in this wire

Answers

Answer:

Explanation:

a) To find the current in the wire, use the formula:

I = Q / t

Where I is the current, Q is the amount of charge that passes through the wire (2.37 C), and t is the time (5.4 s).

I = 2.37 C / 5.4 s = 0.44 A

So the current in the wire is 0.44 A.

b) To find the cross-sectional area of the wire, use the formula:

A = π * r^2

Where A is the cross-sectional area, r is the radius of the wire (1.0 mm = 0.001 m), and π is Pi (3.14).

A = π * (0.001 m)^2 = 3.14 * 10^-6 m^2

So the cross-sectional area of the wire is 3.14 * 10^-6 m^2.

c) To find the charge of the charge carriers in the wire, use the formula:

Q = n * e

Where Q is the charge, n is the number of charge carriers, and e is the elementary charge (1.60 × 10^-19 C).

The wire has a charge carrier density of 7.5 × 10^26 /3, so the number of charge carriers can be calculated as:

n = (charge carrier density * cross-sectional area of the wire)

n = (7.5 × 10^26 / 3) * (3.14 * 10^-6 m^2)

n = 7.5 × 10^26 * 3.14 * 10^-6 / 3

n = 2.35 × 10^20

So the charge of the charge carriers in the wire is:

Q = n * e = 2.35 × 10^20 * 1.60 × 10^-19 C = 3.72 × 10^-19 C

d) To find the drift speed of the electrons in the wire, use the formula:

v = I / (n * e * A)

Where v is the drift speed, I is the current (0.44 A), n is the number of charge carriers (2.35 × 10^20), e is the elementary charge (1.60 × 10^-19 C), and A is the cross-sectional area of the wire (3.14 * 10^-6 m^2).

v = 0.44 A / (2.35 × 10^20 * 1.60 × 10^-19 C * 3.14 * 10^-6 m^2)

v = 0.44 / (2.35 × 10^20 * 1.60 × 10^-19 * 3.14 * 10^-6)

v = 0.44 / (3.74 × 10^-5)

v = 11766 m/s

So the drift speed of the electrons in this wire is 11766 m/s.

A rock is thrown upward with a velocity of 14
meters per second from the top of a 50
meter high cliff, and it misses the cliff on the way back down. When will the rock be 2
meters from ground level? Round your answer to two decimal places.

Answers

Answer:

The rock will be 2 meters from the ground after 1.29 seconds.

Explanation:

The motion of the rock can be described by the following kinematic equation:

h = vi * t + 0.5 * a * t^2

where h is the height of the rock above the ground, vi is the initial velocity (14 m/s), t is time, and a is the acceleration due to gravity (-9.8 m/s^2).

Setting h = 2 m and solving for t, we get:

2 = 14 * t + 0.5 * (-9.8) * t^2

Expanding and solving for t, we get:

t = 1.29 seconds

So, the rock will be 2 meters from the ground after approximately 1.29 seconds.

13. A pendulum bob of mass 5 kg is displaced from the vertical until it is 0.25 m above its lowest point. Upon release, it rises to a height of 0.24 m on the other side. How much energy was lost due to friction? Assuming half the total energy loss takes place during the downward swing, with what speed does the bob pass though its lowest point?

Answers

The speed of the pendulum bob at its lowest point is 1.92 m/s.

Speed of pendulum calculation explained.

Assuming no energy is lost due to air resistance, the total energy of the pendulum is conserved.

Let h be the maximum height the pendulum rises on the right side, and assume that the displacement from the vertical is small enough that we can use the small-angle approximation sin θ ≈ θ. Then, the potential energy of the pendulum at the maximum height is:

U = mgh

where m is the mass of the bob, g is the acceleration due to gravity, and h = 0.24 m.

Similarly, the potential energy of the pendulum at its highest point on the left side is:

U' = mgh'

where h' = 0.25 m.

Since the total energy is conserved, the kinetic energy of the pendulum at its lowest point is equal to the initial potential energy:

K = U - ΔU

where ΔU is the energy lost due to friction. Since half the total energy loss takes place during the downward swing, we have:

ΔU = (1/2)U

Substituting the values, we get:

K = mgh - (1/2)U

K = (5 kg)(9.81 m/s^2)(0.24 m) - (1/2)(5 kg)(9.81 m/s^2)(0.24 m)

K = 5.76 J

At the lowest point, all of this energy is in the form of kinetic energy:

K = (1/2)mv^2

where v is the speed of the bob at the lowest point.

Substituting the values, we get:

5.76 J = (1/2)(5 kg)v^2

Solving for v, we get:

v = sqrt(2K/m)

v = sqrt(2(5.76 J)/(5 kg))

v = 1.92 m/s

Therefore, the speed of the pendulum bob at its lowest point is 1.92 m/s.

To find the energy lost due to friction, we can use the conservation of energy again:

U - ΔU = U' + ΔU'

ΔU + ΔU' = U - U'

Substituting the values, we get:

ΔU + ΔU' = (5 kg)(9.81 m/s^2)(0.25 m) - (5 kg)(9.81 m/s^2)(0.24 m)

ΔU + ΔU' = 4.905 J

Since half the energy loss occurs during the downward swing, we have:

ΔU = (1/2)(4.905 J)

ΔU = 2.453 J

The energy lost due to friction is approximately 2.453 J.

Therefore, The total energy of the pendulum at any point is given by the sum of its potential energy and kinetic energy. At the highest point, the pendulum has only potential energy, and at the lowest point, it has only kinetic energy.

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.Impulse is equal to ... (pick TWO answers) * A.the change in momentum of an object. B.the change in mass of an object. C.the change in volume of an object. D.a force applied to an object for a period of time. E.the original momentum of the object.​

Answers

The impulse is  force × time. Option D

What is Impulse in Physics?

In physics, impulse is a quantity that describes the change in momentum of an object that results from a force acting on it for a period of time. Mathematically, impulse is defined as the product of force and the time interval over which it acts:

Impulse = force × time

The unit of impulse is the newton-second (N·s) in the SI system of units.

Impulse is closely related to the concept of momentum, which is the product of an object's mass and velocity. When a force acts on an object, it causes a change in the object's momentum. The magnitude of this change is equal to the impulse that the force imparts on the object.

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a wheel has angular velocity 4.00 rad/s. which of the following is closest to the number of revolutions that the wheel makes in 15.0 s?
a.10 revolutions
b.20 revolutions
c.15revolutions
d.25 revolutions
e. 5 revolutions
f. i dont know yet

Answers

Answer:

10 revolutions

Explanation:

By using the equation Δ=Δ, we get that Δ=(4.00rad/s)(15.0s)=60.0rad. Since there are 2 radians per revolution, this angular displacement corresponds to (60.0rad)/(2rad/rev)=9.55rev.

The angular velocity of the wheel is 4 rad/s and the time interval is 15 s. Then the number of rotations in radians is 60 radians. This is equal to 9.5 revolutions.

What is angular velocity ?

Angular velocity is a physical quantity that describes the speed of an object in an angular path. It is the rotational o revolutional analogue of of the linear velocity.

The angular velocity of an object is the product of the linear velocity and the radius of the angular path.

Given that, the angular velocity of the wheel = 4 rad/s

time  = 15 s

then, number of radians = 4 rad/s × 15 s = 60 radians.

1 revolution  = 2π radians.

then 60 radians = 60/2π = 9.5 revolutions.

Therefore, the number of revolutions for the wheel in 15 s is 9.5 revolutions.

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i need help asappp

Lots of scientists had worked on the periodic table other than Mendeleev. What did Dmitri Mendeleev do that set him apart from all of the other scientist?
How do you think Mendeleev was able to so accurately estimate the properties of undiscovered elements?
What do you think would have changed if all of the scientist had worked closely together to figure out the best way to arrange the periodic table? Do you think collaboration is always the best answer

Answers

Answer:

Explanation:

1. Mendeleev predicted that there would be more chemical elements to come

2. by looking at the chemical properties

3. i think if all of them came together it would probably still look about the same tho ik it has changed over the years soo

Help Which answer is correct

Answers

Answer: plastic

Explanation:

If the line on a distance versus time graph and the line on a speed versus time graph are both straight lines going through the origin and the 2 graphs be displaying the motion of the same object

Answers

No, because covering uniform distance in uniform units of time ( which the graph one represents) is constant speed, and not uniform speed (as represented in the second graph).

What is a graph?

A generalisation that enables several edges to share the same pair of endpoints is a multigraph. Multigraphs are sometimes simply referred to as graphs in writings.The edges that connect a vertex to itself are known as loops, and they are occasionally permitted in graphs. The definition above needs be modified to define edges as multisets of two vertices rather than sets in order to support loops.When it is obvious from the context that loops are permitted, such generalised graphs are referred to as graphs with loops or just graphs.The set of edges must also be finite because the set of vertices V is typically assumed to be finite. Although occasionally taken into consideration, infinite graphs are typically seen as a specific type of binary relation because most findings on finite graphs are binary.

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1. What is the momentum of an 11 kg bowling ball rolling at 4 m/s?

Answers

Any moving object has momentum. The momentum of an 11 kg bowling ball rolling at 4 m/s is 44 kg m/s.

What is momentum?

The momentum is defined as a quantity which is the product of the mass of the particles and its velocity. It is a vector quantity. It has both magnitude and direction. The rate of change of momentum is equal to the force acting on the particle.

The equation of the momentum is given as:

p = mν

= 11 kg × 4 m/s

= 44 kg m/s

Thus the momentum of the bowling ball is 44 kg m/s.

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Electric Field Direction only OO Voltage Values Grid 00V a +1 nc -1 nc Sensors Now, let's look at how the distance from the charge affects the magnitude of the electric field. Select Values on the menu, and then click and drag one of the yellow E-Field Sensors. You will see the magnitude of the electric field given in units of V/m (volts per meter, which is the same as newtons per coulomb). Place the E-Field Sensor 1 m away from the positive charge (1 m is two bold grid lines away if going in a horizontal or vertical direction), and look at the resulting field strength. Consider the locations to the right, left, above, and below the positive charge, all 1 m away. For these four locations, the magnitude of the electric field is. greatest to the right of the charge. greatest below the charge. greatest above the charge. greatest to the left of the charge. O O O the same. Submit Request Answer

Answers

Considering the locations to the right, left, above, and below the positive charge, all 1 mm away. For these four locations, the magnitude of the electric field is the same.

The area, space, or field around it is an electric field of an isolated charge. There are mainly two types of electric fields i.e., static and dynamic. Moving charges produced dynamic electric fields whereas static electric fields are produced by stationary charges.

Direction and magnitude do not change over time for static electric fields. The direction can be positive or negative which is determined by the charge of the source.

The electric field formula is the electric field magnitude at a certain point from the charge Q, and it hangs on two factors- the distance r from the point to the origin Q and the amount of charge at the origin Q.

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The correct question is:

Now, let's look at how the distance from the charge affects the magnitude of the electric field. Select Values on the menu, and then click and drag one of the yellow E-Field Sensors. You will see the magnitude of the electric field given in units of V/mV/m (volts per meter, which is the same as newtons per coulomb). Place the E-Field Sensor 1 mm away from the positive charge (1 mm is two bold grid lines away if going in a horizontal or vertical direction), and look at the resulting field strength.

Consider the locations to the right, left, above, and below the positive charge, all 1 mm away. For these four locations, the magnitude of the electric field is________________.

17. Which of the following supports the idea that the genetic code is common to all living
things?
A. All living things share similar modes of reproduction
B. The same adaptations help all living things survive in the same way.
C. All living things have identical ways of using energy for survival.
D. All living things contain DNA with the same nitrogenous bases.

Answers

Answer:

Explanation:

genetic code us a keyword

different organisms have diff ways in reproducting

different ways of adapting to environments, obtianing energy, etc. It's mainly asking what makes all living things have something in common, like ALL all

excavation costs are based on the
A. amount of earth removed
B. depth of the frost line in the area
C. time involved multiplied by a standard rate
D. sophistication of the machinery necessary

Answers

Answer:

C

Explanation:

Excavation costs are generally based on the time involved multiplied by a standard rate.


When a 3.8 kg block is pushed against a massless spring of force constant 4.5 x 103 N/m, the spring is compressed 7.8 cm. The
block is released, and it slides 3.0 m (from the point at which it is released) across a horizontal surface before friction stops it.
What is the coefficient of kinetic friction between the block and the surface?

Answers

The coefficient of kinetic friction between the block and the surface 0.245.

What is Kinetic friction?

Friction is a force that opposes relative motion and manifests itself at the interfaces of bodies as well as inside, as in the case of fluids. Leonardo da Vinci was the first to conceive the idea of friction coefficient.

The characteristics of the surfaces, the environment, surface details, the presence of lubricant, etc. all affect how much friction there is between surfaces.

There are a number of theories on what generates static friction, and like other friction-related ideas, each one holds true in some situations but falls short in others.

Therefore, The coefficient of kinetic friction between the block and the surface 0.245.

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The bottom cube has mass m2 = 4.8kg and sits on a surface without friction. The top cube has mass m1 = 2.2kg. The friction between the two cubes is μ = 0.5. What is the maximum force that can be applied on the upper cube so that the two cubes move together?

Answers

The maximum force that can be applied on the upper cube is 26.29N.

Solving for the  the maximum force that can be applied on the upper cube, we have:

The maximum force that can be applied on the upper cube so that the two cubes move together is given by the equation:

F_max = μ(m1 + m2)g

where,

μ = the coefficient of friction

m1 and m2 = the masses of the top and bottom cube

g = the acceleration due to gravity.

Substituting in the values, we get:

F_max = 0.5(2.2kg + 4.8kg)(9.81m/s²)

F_max = 26.29N

Therefore, the maximum force that can be applied on the upper cube is 26.29N.

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(2 of 5)
Now, decrease the planet size by sliding the Planet Properties 'radius' slider to the left until
it is one-tenth (0.100) the radius of Jupiter. For this configuration, the normalized flux
(relative amount of star light reaching an observer on Earth) when the planet is off to he
side (not transiting) is. while the normalized flux when the planet is transiting is
O 1.000, 0.990
O 0.990,1.000
O 1.00000, 0.99990
O 0.99990,1.00000

Answers

Its normalized flux for this configuration while the planet is off to the side is, and the normalized flux whenever the planet equals transiting is, respectively, 1.00000 and 0.99990.

What defines a planet?

It specifies three requirements for a planet: It must move about a sun. It must be large enough for gravity to pull it in a spherical direction. It must be massive sufficient that its gravity wiped away any other things of a similarly sized in its circle of the Sun.

What is a planet made of?

Earth is formed of rock, as are the three inner planets of the solar system (Mercury, Venus, and Mars), which also contain metals like aluminum and aluminum as well as typical minerals like feldspar.

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Answer:

1.00000,0.99990 (correct)

Explanation:

A container of weight W = 200 lb is supported by a continuous cable BAC and a small pulley at A, as shown in the figure below. The cable is attached between two walls that are L = 40 ft apart, and the right support at C is h=8 ft below the left support at B. Cable BAC has a total length LBAC = 50 ft and sags prior to adding the pulley and container. From equilibrium considerations, we can prove that cable segments BA and AC are inclined at the same angle from the horizontal. Neglect the size and weight of the pulley for this analysis. Determine the following quantities:
The inclination angle for both cable segments.
The tension force T in cable BAC. ​

Answers

Answer:

To determine the inclination angle for both cable segments, we can use the law of sines. Let's call the inclination angle "theta."

L/sin(theta) = h/sin(90-theta)

40/sin(theta) = 8/cos(theta)

Cross multiplying and simplifying, we get:

sin(theta) = 8/40 = 1/5

So,

theta = sin^-1(1/5) = 11.31 degrees

Next, we can use the law of cosines to find the tension force T in cable BAC.

T^2 = W^2 + (LBAC)^2 - 2WLBACcos(theta)

T^2 = 200^2 + 50^2 - 2(200)(50)cos(11.31)

T = sqrt(200^2 + 50^2 - 2(200)(50)cos(11.31)) = sqrt(20000 + 2500 - 2000cos(11.31))

T = sqrt(22500 - 2000cos(11.31))

Rounding to the nearest whole number, we get:

T = 150 lb

So, the inclination angle for both cable segments is 11.31 degrees, and the tension force T in cable BAC is 150 lb.

Explanation:

= 1.2M²₂// then taking a penedy A constant force of 5N ads to 5 sec. on a mass of 5 kg initially at rest. calculate the final momentum!​

Answers

The final momentum is 25 Kg m/s

What is the momentum?

In physics, momentum is a measure of an object's motion, calculated by multiplying the object's mass by its velocity. Mathematically, momentum is represented by the symbol "p" and can be expressed as:

p = mv

where "p" is momentum, "m" is mass, and "v" is velocity. Momentum is a vector quantity, meaning that it has both a magnitude (the amount of momentum) and a direction (the direction of the motion).

Given that;

Ft = mv - mu

It then follows that;

F = force

m = mass

v and u are the initial and the final velocities

Thus;

5 * 5 = 5v

v = 25/5

= 5 m/s

The final momentum is thus;

5 m/s * 5 Kg

= 25 Kg m/s

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A heart defibrillator being used on a patient has an RC time constant of 23.0
ms due to the resistance of the patient and the capacitance of the defibrillator. If the defibrillator has an 9.75
μF capacitance, what is the resistance of the path through the patient?
If the initial voltage is 12.0
kV, how long does it take to decline to 115
V?

Answers

A heart defibrillator being used on a patient has an RC time constant of 23.0 ms. ,If the defibrillator has a 9.75 μF capacitance, then it takes approximately 21.1 ms for the initial voltage of 12.0 kV to decline to 115 v.

What is the calculation of the voltage of the defibrillator ?

The calculation is explained below,

RC = resistance x capacitance

resistance = RC / capacitance

resistance = (23.0 ms) / (9.75 μF) = 2,359 ohms

Time for  the initial voltage of 12.0 kV to decline to 115 V,

V(t) = V₀ ×  [tex]{e}^(^-^t^/^R^C^)[/tex]    ( here, V(t)=voltage at time t, V₀= initial voltage, e= constant= 2.71828, t= time, R= resistance, C= capacitance)

For t= -RC × ln(V(t) / V₀)

t = - (23.0 ms) × ln(115 V / 12.0 kV) = 21.1 ms

Hence, a heart defibrillator being used on a patient has an RC time constant of 23.0 ms. ,If the defibrillator has a 9.75 μF capacitance, then it takes approximately 21.1 ms for the initial voltage of 12.0 kV to decline to 115 v.

 

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A force of 50 newtons is used to do 5.0 x 102 joules of work on an object. Over what distance was this force applied?

Answers

The distance over which the force was applied would be 10 meters.

Work done problem

The work done on an object is given by the product of the force applied and the distance over which it is applied. Therefore, we can use the formula:

Work = Force x Distance

We know that the force applied is 50 newtons, and the work done is 5.0 x 10^2 joules. We can rearrange the formula to solve for distance:

Distance = Work / Force

Substituting the values we know, we get:

Distance = (5.0 x 10^2 J) / 50 N

Distance = 10 meters

Therefore, the force of 50 newtons was applied over a distance of 10 meters to do 5.0 x 10^2 joules of work on the object.

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