The electric potential energy is inversely proportional to the distance between subject and source. Option a is the correct answer.
The electric potential energy of any given charge or system of charges is termed as the total work done by an external agent in bringing the charge or the system of charges from infinity to the present configuration without undergoing any acceleration.
Electrostatic potential energy is given by the formula, U = [1/(4πεo)] × [q1q2/d].
where, q1, q2 are the electric charges,
d is the distance between the charges.
As per the formula, the energy is inversely proportional to the distance between subject and source.
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--The complete question is, Which of these below is a property of electric potential energy of point charges?
a) inversely proportional to the distance between subject and source
b) independent of the subject's charge
c) a vector quantity with direction determined by the electric flux
d) always a negative value--
two squirrels are eating on the same tree branch. one squirrel is eating an apple and the other squirrel is eating an acorn. if both squirrels accidently drop their food, will the apple or the acorn have the greater speed when it hits the ground? (assume air resistance is negligible.)
The speeds of the apple and the acorn when they hit the ground will be: the same
What is gravity?In physics, gravity is the force of attraction that the earth exerts on all bodies possessing mass by pulling them toward its center.
When an object is dropped (in the absence of air resistance) it has a positive acceleration equal to the gravity.
Therefore, no matter in which instant of the movement the apple and the acorn are, their acceleration will always be equal to the acceleration of gravity 9.8 m/s², and their speeds will be the same when they hit the ground
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Question:
A 385 kg car is parked on a 10.0-degree inclined road with the handbrake disengaged. With what acceleration would the car slide down, assuming the road is frictionless?
Weight:
When an object is placed on an inclined surface then its weight acts downwards. For ease of calculations, we can resolve the weight vector into the components, along the plane, and perpendicular to the plane.
The perpendicular component is balanced by the normal reaction from the plane.
The acceleration with which the car would slide down a frictionless 10.0-degree inclined road is 9.8 m/s^2.
The weight of the car acts downwards, and when placed on an inclined surface, we can resolve it into two components - one along the plane and the other perpendicular to the plane.
The component perpendicular to the plane is balanced by the normal reaction from the plane. The component along the plane is given by the equation W * sin(θ), where W is the weight of the object and θ is the angle of inclination.
In this case, the weight of the car is 385 kg, and the angle of inclination is 10.0 degrees, so W * sin(10) = 385 * sin(10) = 63.4 kg. This is the component of the weight acting along the plane.
Since the road is frictionless, the only force acting on the car is its weight along the plane, and this force will cause the car to accelerate downwards. Using Newton's second law, we can calculate the acceleration as follows:
F = ma, where F is the force acting on the car, m is its mass, and a is its acceleration.
Since F = W * sin(θ), substituting the values we have,
a = F / m = (63.4 kg) / (385 kg) = 9.8 m/s^2.
So, the acceleration with which the car would slide down the frictionless 10.0-degree inclined road is 9.8 m/s^2.
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A particle is constrained to travel along the path.a) If x = (4t^4) m, where t is in seconds, determine the magnitude of the particle's velocity when t = 0.5 sb) Determine the magnitude of the particle's acceleration when t = 0.5 s
The required magnitude of velocity and acceleration are calculated to be 2 m/s and 12 m/s² respectively.
The position of the particle is given as, x = 4t⁴
We know the velocity, V = dx/dt
dx/dt = d/dt (4t⁴) = 16 t³
The velocity at t = 0.5 s is given as,
V = 16 t³ = 16 × 0.5³ = 2 m/s
Acceleration function A = dV/dt
dV/dt = d/dt(16 t³) = 48 t²
A = 48 t² = 48(0.5)² = 12 m/s²
Thus, the magnitude of velocity and acceleration are calculated to be 2 m/s and 12 m/s² respectively.
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Where is the acceleration negative?
A. B-D
B. C-E
C. A-B
D. D
the answers is bce because I di that before
the scientist, who invented the first incandescent light bulb and who, at one point, had a monopoly on the electrical power delivery was ______.
1. Wilhelm Roentgen
2. George Westinghouse
3. Thomas Edison
4. Relay Switch
Thomas Edison invented the first incandescent light bulb and, at one point, had a monopoly on the electrical power delivery. Correct option is 3.
Thomas Edison was an American inventor and businessman who is best known for his development of the incandescent light bulb. He began working on the light bulb in 1878 and by 1879, he had developed a bulb that could burn for several hours. Edison went on to improve the design of the bulb and also developed a system for delivering electrical power to homes and businesses, which he called the Edison Electric Light Company.
At its height, the Edison Electric Light Company held a monopoly on the electrical power delivery industry, which allowed Edison to control the distribution of electrical power to homes and businesses. This monopoly lasted for several years until the arrival of competitors, such as George Westinghouse, who developed an alternative system for delivering electrical power.
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which of the visual elements can best be described as ""the path of a moving point""? group of answer choices motion time line light
The visual elements can best be described as "the path of a moving point"
(c). line is correct option.
The two most fundamental visual signals for suggesting depth on a flat surface are used in the Indian picture from the 18th century depicting Maharana Amar Singh and others watching musicians and acrobats.
The following is the appropriate response to the question that was previously posed: "Line." The line that represents "the route of a moving point" is the best way to express the visual components. Depending on the direction you are pointing, a line may be vertical or horizontal.
The two most fundamental visual signals for suggesting depth on a flat surface are used in the Indian picture from the 18th century depicting Maharana Amar Singh and others watching musicians and acrobats. Chiaroscuro and hatching are what they are.
The complete question is,
Which of the visual elements can best be described as "the path of a moving point"? - motion - time - mass - line - light
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if an element has 30 protons and 33 neutrons , what is the mass?
Answer: 63
Explanation: That would be 30 Plus the number of neutrons, that is 33. So let's write 33 and we add we get 63. So the mass number of this item is 63.
State that a current-carrying coil in a magnetic field experiences a turning effect and what the effect is increased by:
-increasing the number of turns on the coil
-increasing the current
-increasing the strength of the magnetic field
The turning effect experienced by the current carrying coil is increased by a) Increasing the number of turns on the coil, b) By increasing the current c) By increasing the strength of the magnetic field.
When a current carrying coil is placed in a magnetic field(B) it experiences a force which produces the turning effect in the coil. The direction of this force is determined by Fleming's left hand rule. The formula of magnetic force is as follows:
F = BILsinθ
Where B = magnetic field intensity in tesla, I = current in the coil in ampere, L is the length of the conductor, and sinθ is the angle between magnetic field, and the direction of the coil. Magnetic field is increased by turning the number of turns in the electromagnet. We can see by the formula that F increases as the values of B, I and L are increased.
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how long does it take for the top to complete the first five revolutions? the string is long enough that it is wrapped around the top more than five turns.
Top requires 0.57 s to complete its first five revolutions.
How long does it take for the top to complete the first five revolutions?
A toy top with a spool of diameter 5.0 cm has a moment of inertia of 3.0×1025 kg⋅m2 about its rotation axis. To get the top spinning, its string is pulled with a tension of 0.30 N.A spinning top, or simply a top, is a toy with a squat body and a sharp point at the bottom, designed to be spun on its vertical axis, balancing on the tip due to the gyroscopic effect.Once set in motion, a top will usually wobble for a few seconds, spin upright for a while, then start to wobble again with increasing amplitude as it loses energy, and finally tip over and roll on its side.Tops exist in many variations and materials, chiefly wood, metal, and plastic, often with a metal tip. They may be set in motion by twirling a handle with the fingers, by pulling a rope coiled around the body, or by means of a built-in auger (spiral plunger).To learn more about top refers to:
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a steel ball of mass 0.50 kg is fastened to a cord 70 cm long and is released when the cord is horizontal. at the bottom of its path, the ball strikes a 2.5 kg steel block initially at rest on a frictionless surface. the collision is elastic. find (a) the speed of the ball and (b) the speed of the block, both just after the collision.
a) The final speed of the ball is 2.47 m/s.
b) The final speed of the block is 1.23 m/s.
Given,
The mass of the steel ball (m) = 0.5 Kg
The length of the cord or the height at which the ball is (h) = 0.7 m
The mass of steel block (M) = 2.5 Kg.
To find,
a) The speed of the ball just after the collision(v₁)
b) The speed of the block just after the collision(v₂).
Now from the conservation of energy:
Decrease in potential energy (mgh) = increase in kinetic energy (1/2 mv²)
mgh = 0.5mv²
⇒ 10 × 0.7 = 0.5 v²
⇒ 14 = v²
⇒ v = 3.7 m/s
a) Now we know that the velocity of ball v₁ is
[tex]v_1 = \frac{m - M}{m + M}v[/tex]
⇒ [tex]v_1 = \frac{0.5 - 2.5}{0.5 + 2.5} \times 3.7[/tex]
⇒ v₁ = -2.47 m/s
Hence, the final speed of the ball is 2.47 m/s
b) Now for the velocity of the block v₂ is:
[tex]v_2 = \frac{2m}{m+M}v[/tex]
⇒ [tex]v_2 = \frac{2\times 0.5}{0.5 + 2.5} \times 3.7[/tex]
⇒ v₂ = 1.23 m/s
Therefore, the final speed of the block is 1.23 m/s.
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A circuit contains a 10 Ohm heater and six 240 Ohm lamps,
each containing a 60 Watt bulb, all connected in series. The
voltage across the circuit is 120 V. What is the current in the
circuit when only 4 lamps are turned on? What is the current in
the circuit when all the lamps are turned on? What is the
current in the circuit when all six lamps and the heater are
turned on? If the circuit has a fuse which will melt if the current
exceeds 12 A, will the fuse melt?
Answer -
1. Since the circuit is connected in series, the current in the circuit will be 0 if all the components of the circuit are not turned on. This is because of the single path that a series circuit has. So here, when only 4 lamps are turned on, the current in the circuit will be 0.
2. In this case as well, the current passing through the series circuit will be 0 as the heater which is connected to the circuit through series connection is not switched on.
3. If all the components of the series circuit is turned on,
Equivalent Resistance,
Rn = R1 + R2 + R3 + R4 + R5 + R6 + R7
Rn = 10Ω + 240Ω + 240Ω + 240Ω + 240Ω + 240Ω + 240Ω
∴ Rn = 1450Ω.
Then, current flowing through the circuit will be V/Rn.
I = V/Rn
I = 120V / 1450Ω
I = 0.08275 A
I ≈ 0.083.
4. The fuse will not melt as it is of 12A and the current flowing through the series circuit is 0.083, which is less that 12A.
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First come first serve, solve it properly and get points.
Explanation:
Solubility is the ability to dissolve within a solvent to form a mixture called a solution
If a substance is soluble, it dissolves in water
If a substance is insoluble in water - it does not dissolve
Boling point - the temperature at which a substance in its liquid state
converts into the same substance in its gas state.
Water boils at 100 degree centigrade.
Melting point - the temperature at which a substance in its solid state
converts into the same substance in a liquid state.
Ice melts at 0 degree centigrade.
Water freezes at 0 degree centigrade.
How much matter (mass) is packed into a specific space (volume).
Answer:La verdad no tengo conocimiento alguno pero solo te puedo decir que las opciones que te dan en la hoja te pueden ayudar
Explanation:
A small asteroid is moving in a circular orbit of radius R0about the sun. This asteroid is suddenly struck by another asteroid. (We won't worry about what happens to the second asteroid, and we'll assume that the first asteroid does not acquire a high enough velocity to escape from the sun's gravity). Immediately after the collision, the speed of the original asteroid is V0, and it is moving at an angle ? relative to the radial direction, as shown in the figure. (Figure 1) Assume that the mass of the asteroid is m and that the mass of the sun is M, and use G for the universal gravitation constant. Since the asteroid does not reach escape velocity, it must remain in a bound orbit around the sun, which will be an ellipse. Take the following steps to find Ra and Rp, the aphelion and perihelion distance of the asteroid after the collision. (The aphelion is the point in the orbit farthest from the sun, and the perihelion is the point in the orbit closest to the sun.) As in most orbit problems, the most fundamental principles involved are energy and angular momentum conservation.
Part A Find a quadratic equation of the form 0=Re2+bRe+c that relates Re to the known quantities L, E, m, M, and G. In the space provided, write b, the co-efficient of Re. Express your answer in terms of one or both of the known quantities E and L, and some or all of the fixed constants M, m, and G. Construct your equation such that the coefficient of the Re2 term is 1.
The coefficient of Re is - (G M m). The quadratic equation of the form that relates Re to the known quantities L, E, m, M, and Gravitational constant (G) is (L² / (2 m)) * (1 / (Re²)) - (G M m / Re).
First, we consider energy and angular momentum conservation to form a quadratic equation.
The total mechanical energy (E) of the asteroid is given as the sum of its kinetic energy (KE) and potential energy (PE),
E = KE + PE
The kinetic energy (KE),
KE = (1/2) mv²
where v is the speed of the asteroid.
The potential energy (PE) is given by:
PE = -G M m / R
where, M and m is the mass of the Sun and asteroid, R is the separation between the asteroid and the Sun, and G is the universal gravitational constant.
From the conservation of Angular momentum,
L = m V R
To eliminate v and express E in terms of R:
KE = (1/2) mv²
KE = (1/2) (L² / (m²R²))
KE = L² / (2 m² R²)
PE = -G M m / R
E = KE + PE
E = (L² / (2 m² R²)) - (G M m / R)
To rewrite this equation as a quadratic equation of the form 0 = Re²+ bRe + c.
where, Re represents the distance R, and b is the coefficient of Re.
0 = (L² / (2 m)) * (1 / (Re²)) - (G M m / Re)
Multiplying through by 2 m² Re²
0 = (L² / (2 m)) - (G M m Re)
bY comparing the equation with the quadratic form 0 = Re^2 + bRe + c, the coefficient of Re is:
b = - (G M m)
Hence, the coefficient of Re is - (G M m).
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Peak values for a neodymium-glass laser are 600 joules for 1 nanosecond. If the cross-section of the laser beam is 1 cm2, what are the maximum values of E and B? (µ0 = 4p ´ 10-7 T-m/A)
The energy of a laser is described by two parameters: the peak value and the pulse duration. The peak value of a neodymium-glass laser is 600 joules for 1 nanosecond. In this case, the cross-section of the laser beam is 1 cm2.
A laser is a device that produces a concentrated beam of light with a very high energy density. To find the maximum values of E and B, we need to use the relationship between these quantities and the electromagnetic field generated by the laser. The electric field E is proportional to the rate of change of the magnetic field B, which in turn is proportional to the current flowing through the laser.
So, the maximum values of E and B can be calculated from the peak value and the pulse duration of the laser. To do this, we first calculate the peak current in the laser using the peak value and the cross-section of the beam. The peak current is given by I = E/R, where R is the resistance of the laser. In this case, we assume that R is very small, so the peak current is equal to the peak value divided by the cross-section of the beam.
Next, we use Faraday's law of induction to calculate the maximum value of the magnetic field B. Faraday's law states that the rate of change of the magnetic field is proportional to the current flowing through the laser. So, B = μ0I/2πr, where μ0 is the permeability of free space and r is the distance from the centre of the beam.
Finally, we use the relationship between the electric and magnetic fields to find the maximum value of the electric field E. The electric field is proportional to the rate of change of the magnetic field, so E = dB/dt. Since the pulse duration of the laser is 1 nanosecond, we can calculate the maximum value of E by taking the derivative of B with respect to time.
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g an inertia load of 0.04 kg m2 is accelerates from standstill with a constant torque applied. it reaches 100 rad/s in 2.0 s. what is the applied torque?
The applied torque is 800 N-m.
What is the applied torque?
This question uses the equation for torque: Torque (T) = Moment of inertia (I) × Angular acceleration (α).
This equation can be derived from Newton's second law by considering the rotational motion of an object.
The steps for calculate the applied torque as follows
Step 1: Calculate the moment of inertia.
Inertia load = 0.04 kg m2
Moment of inertia (I) = 0.04 kg m2
Step 2: Calculate the angular acceleration.
Angular acceleration (α) = (100 rad/s) / (2.0 s) = 50 rad/s2
Step 3: Calculate the applied torque.
Torque (T) = Moment of inertia (I) × Angular acceleration (α)
T = (0.04 kg m2) × (50 rad/s2)
T = 800 N-m
The applied torque is 800 N-m
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a stationary object explodes, breaking into piece three pieces with the masses m, m, and 3m. the two pieces of the mass m move off at right angles to each other with the same magnitude of velocity. what are the magnitude and direction of the velocity of the piece having a mass 3 m.
The magnitude of the velocity of the piece having mass 3m is three times the velocity of the pieces having mass m.
The direction of the velocity of the piece having mass 3m is at an angle of 90 degrees to the direction of velocity of the pieces having mass m.
When the two pieces of mass m move off at right angles to each other, their momentum vectors cancel each other out. This means that the total momentum of the system must remain the same, so the third piece of mass 3m must move in a direction at 90 degrees to the direction of the two pieces of mass m.
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the magnetic field inside an instrument is b⃗ =(b→=( 2.9 i^i^ - 1.3 j^)tj^)t where b⃗ b→ represents the magnetic field vector and tt stands for tesla, the unit of the magnetic field.
The unit for magnetic field is Tesla(T).
The magnetic field inside an instrument is given as b⃗ = (2.9 i - 1.3 j) t, where b⃗ represents the magnetic field vector, t stands for tesla, which is the unit of magnetic field, and i^ and j^ represent the unit vectors in the x and y directions, respectively. This equation describes the magnitude and direction of the magnetic field inside the instrument, with a magnitude of approximately 3.16 tesla in the direction that makes an angle of approximately -56.31 degrees with the x-axis. A magnetic field is a field of force that is created by a moving electric charge or a permanent magnet. It can be thought of as lines of magnetic flux that emanate from the source and extend into space, influencing the behavior of other moving charges or magnets in the vicinity.
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a total of 580 c of charge passes through a flashlight in 0.480 h. what is the average current in milliamperes? ma
A total of 580 c of charge passes through a flashlight in 0.480 h. The average current in milliamperes is 1208330 milliamperes.
The average current (I) can be calculated as the charge (Q) divided by the time (t) taken to pass that charge.
I = Q / t
Substituting the given values, we get:
I = 580 coulombs / (0.480 hours) = 1208.33 Amperes
To convert Amperes to milliamperes, we multiply by 1000:
I = 1208.33 Amperes x 1000 milliamperes/Ampere = 1208330 milliamperes
So the average current in milliamperes is 1208330 milliamperes.
Current is a measure of the flow of electric charge in a circuit. It is a scalar quantity and is typically measured in Amperes (A). The flow of electric charge is caused by the movement of electrons through a conductor, such as a wire. The direction of current is conventionally defined as the direction of flow of positive charge, even though electrons are negatively charged. The magnitude of the current depends on the number of electrons flowing past a point in a given time.
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if the ball hits olaf and bounces off his chest horizontally at 8.50 m/s in the opposite direction, what is his speed vf after the collision?
The velocity of the olaf after collision is 0.108 m/s, if the mass of the olaf is 72.1 kg.
Mass of the ball, m₁ = 0.4 kg
Mass of olaf, m₂ = 72.1 kg
Initial velocity of the ball, v₁ = 11 m/s
Initial velocity of olaf, before collision, v₂ = 0
velocity of the ball after collision, v₃ = -8.50 m/s
Let the velocity of olaf after collision, = v₄
By the law of conservation of momentum,
m₁v₁ + m₂v₂ = m₁v₃ + mv₄
0.4×11 + 72.1×0 = 0.4(-8.50) + 72.1×v₄
4.4 + 3.4 = 72.1×v₄
v₄ = 7.8/72.1
v₄ = +0.108 m/s
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--The given question is incomplete, the complete question is:
"Olaf is standing on a sheet of ice that covers the football stadium parking lot in Buffalo. New York; there is negligible friction between his feet and the ice. A friend throws Olaf a ball of mass 0.400 kg that is traveling horizontally at 11.0 m/s. Olaf's mass is 72.1kg. If the ball hits Olaf and bounces off his chest horizontally at 8.50m/s in the opposite direction, what is his speed V after the collision? Express your answer numerically in meters per second."--
Samantha builds a lever to lift objects in a science experiment. The load arm is 0.4 meters. If she wants the lever to have a mechanical advantage of 8, how long should the effort arm be?
The effort arm of the lever should be 3.4 meter long to have a mechanical advantage of 8.
What is mechanical advantage?The force amplified by utilizing a tool, mechanical device, or machine system is known as mechanical advantage.
To achieve the desired output force amplification, the gadget trades off input forces against movement. The law of the lever serves as a paradigm for this.
mechanical advantage of a lever = 8
Hence,
mechanical advantage of a lever = effort arm/load arm
Effort arm of a lever = Mechanical advantage × load arm
= 8 × 0.4 m
= 3.2 m.
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pls helpHow do scientists reduce the number of unwanted variables in an experiment?
a.by only having one scientist work on each experiment
b.by conducting multiple experiments at the same time
c.by performing experiments under laboratory conditions
d.by performing additional background research
The way scientists reduce the number of unwanted variables in an experiment is c.by performing experiments under laboratory conditions
What is an Unwanted Variable?Anything that might have an impact on the dependent variable is considered an unnecessary variable.
In addition to influencing the independent variable, a confounding variable also correlates with or has a causal relationship with the dependent variable.
With this in mind, by using a controlled method in a lab, they are able to reduce the number of unwanted variables in an experiment.
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two forces act on an object , one force is 7N west and other force is 12N north find the magnitude and direction of the resultant force by accurate construction and measurement
By careful construction and measurement, -5N is the magnitude and direction of the resulting force.
How do you calculate the sum of the effects of two forces on a point?Calculate the resultant force by deducting the larger force's size from the smaller force's magnitude. The direction of the smaller force and the resulting force are identical.
When two forces apply on an object 20N to the north and 12N to the south, the resultant force will act towards the north with a magnitude of 8N.
Create coordinate axes on the free-body diagram. It is best to separate the X and Y components from the forces acting on the item. The x and y components of the final force are obtained by adding the x and y components of each force.
7N - 12N = -5N.
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consider earth and a cloud layer 800 m above earth to be the plates of a parallel-plate capacitor. (a) if the cloud layer has an area of 2.9 km2 , what is the capacitance?
The capacitance is 6.79 x 10^11 F.
The capacitance of a parallel-plate capacitor is a measure of its ability to store electrical charge. It is determined by the physical properties of the material between the plates, such as its permittivity, as well as the geometry of the plates themselves. The capacitance can be calculated using the equation: [tex]C = \epsilon_0 * \frac{A}{d}[/tex], where
C is the capacitance,[tex]\epsilon_0[/tex] is the vacuum permittivity, a constant that represents the electric flux density in a vacuum (8.854 x 10^-12 F/m),A is the area of each plate, andd is the separation distance between the plates.In this scenario, the Earth and a cloud layer 800 m above it are considered to be the plates of a parallel-plate capacitor. Given that the cloud layer has an area of 2.9 km^2, we can calculate the capacitance using the above equation,
C = ε0 * 2.9 x 10^6 m^2 / 0.8 m
= 6.79 x 10^11 F.
The result is 6.79 x 10^11 F.
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When rubbing a plastic ruler with cloth the: a. plastic and cloth both become positively charged b. plastic and cloth both become negatively charged c. plastic becomes negatively charged and cloth remains neutral d. plastic becomes negatively charged and cloth becomes positively charged
"When rubbing a plastic ruler with cloth the plastic becomes negatively charged and cloth becomes positively charged." Correct option is D.
When two items come in contact, they develop opposing charges. The total electric charge in a closed system must remain constant, according to the law of conservation of charge.
We can see that no charge is being created or destroyed when we rub a cloth with a plastic ruler because some electrons are transferred from the cloth to the ruler, giving the ruler a negative charge and the cloth an equal positive charge. This means that the conservation of charge principle is in use in this situation.
Thus, option D is correct.
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[OU.04]Two stars, Star 1 and Star 2, are at almost equal distances from Earth. The table below shows the masses of the two stars.
Name of Star Mass of Star (in million solar masses)
Star 1 3.61
Star 2 11.73
I am lost on this question HELP
Which of these statements is most likely correct about the stars?
Earth exerts a greater gravitation force on Star 1 than on Star 2.
Earth exerts a greater gravitation force on Star 2 than on Star 1.
Star 1 attracts Star 2 with a greater gravitational force than Star 2 attracts Star 1.
Star 2 attracts Star 1 with a greater gravitational force than Star 1 attracts Star 2.
Answer: Which of these statements is most likely correct about the stars?
Star 2 attracts Star 1 with a greater gravitational force than Star 1 attracts Star 2.
No, because Third Newton Law states that both forces are equal in magnitude.
Earth exerts almost equal gravitation force on both the stars.
No, because the Universal Gravitational Law, estblished by Newton, states the atraction force to two masses is proportional to the product of the masses.
Star 1 attracts Star 2 with a greater gravitational force than Star 2 attracts Star 1.
No (same reason for the first statement)
Earth exerts greater gravitation force on Star 2 than on Star 1.
Right. This is the correct statement. Given the mass of Star 2 is greater than the mass of Star 1, by the Universal Gravitational Law, the earth exerts greater gravitational attraction on Star 2.
Explanation:
:)
The table below shows the distance traveled for runners at several times throughout a run.
Runner 0 s 30 s 60 s 90 s 120 s
Affas 0 m 20 m 45 m 75 m 95 m
Heather 0 m 18 m 43 m 77 m 105 m
Karen 0 m 24 m 48 m 72 m 96 m
Melanie 0 m 30 m 58 m 84 m 104 m
Which runner displayed non-accelerated motion?
Heather
Melanie
Karen
Affas
Answer:
karen & melanie
Explanation:
Runner 0 s 30 s 60 s 90 s 120 s
use one distance # minus the previous #
Affas 0 m 20 m 45 m 75 m 95 m
diff: 20. 25 30 20 accelerate then decelerate
Heather 0 m 18 m 43 m 77 m 105 m
diff: 18 25 34 28 accelerate then decelerate
Karen 0 m 24 m 48 m 72 m 96 m
diff: 24 24 24 24 no acceleration constant speed
Melanie 0 m 30 m 58 m 84 m 104 m
diff: 30 28 26 20 decelerate the whole time so this is also non-accelerated motion
a satellite is orbiting the earth a distance equal to the radius of the earth above its surface. what is the acceleration due to gravity in this orbit?
Explanation:
The acceleration due to gravity at a distance equal to the radius of the Earth above its surface is approximately 9.8 m/s^2, which is the same as the acceleration due to gravity at the surface of the Earth. This is because the gravitational force acting on the satellite is determined by the mass of the Earth and the distance between the satellite and the center of the Earth, and at a distance equal to the radius of the Earth, these factors cancel out to produce an acceleration equal to the surface acceleration.
what is the magnitude of the net force on q3 from q1 and q2 if q1=q2=q3=5.67×10−8c , and d = 60.0 cm ?
Q 1 equals 4 Q 3 because Q 2 equals Q 3. The sum of the forces acting on q2 determines its magnitude. F = k q a q b r 2 is the formula we use to compute each individual force.
The right answer is D) Q 2 and Q 3 have the same magnitude but the opposite sign.∴
Due to their mutual attraction, Q 2 and Q 3 feel an attractive force. Now, Q 1 must have a sign from Q 3 to repel it so that the net force on Q 3 is zero r 2.
−kQ \s2 \s \s Q \s3
\s = \s(2r) \s2
k(Q \s1 \s \s )Q \s3
⇒Q \s1 \s \s =−4Q \s2
Q 1 equals 4 Q 3 because Q 2 equals Q 3.
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why is benzaldehyde not soluble in water
Benzaldehyde is not soluble in water because it is a non-polar molecule and water is a polar solvent.
Non-polar substances tend to dissolve in other non-polar substances, while polar substances dissolve in polar solvents. This is due to the fact that the polar water molecules form hydrogen bonds with each other, and the non-polar benzaldehyde molecule is unable to interact with these hydrogen bonds. As a result, benzaldehyde remains separate from the water molecules and does not dissolve in water. A non-polar substance is a chemical substance that does not have a charged distribution of electrons, meaning it does not have distinct positive and negative regions. These substances have a uniform distribution of electrons, resulting in a symmetrical molecule that does not have any polar bonds.
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When you flick a card from beneath a coin that hardly moves, you're illustrating - inertia - friction - support force - equilibrium
When you flick a card from beneath a coin, you are illustrating the principles of inertia, friction, support force and equilibrium.
Inertia is the property of an object that resists changes to its state of motion. When you flick a card from beneath a coin, the card will move quickly, while the coin will barely move at all. This is because the coin has a greater mass, meaning it has a greater resistance to changes in its motion. The coin's tendency to remain at rest unless acted upon by an external force is an example of inertia.
Friction is another force that affects the motion of objects, and it acts to slow down or stop the motion of an object by opposing the direction of motion. Support force refers to the force exerted by a surface that supports an object, such as the table or floor that the coin and card are resting on. Equilibrium is the state of a system in which the forces acting on an object are balanced, so that the object remains at rest or moves at a constant velocity.
Support force is the force exerted by the coin on the card. Finally, equilibrium is the state in which all the forces acting on an object are balanced.
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