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As a student walks downhill at constant speed, his gravitational potential energy
1.5 x 10^2 J
Mass would be the same but its weight would be less on the Moon.
19 N
0.18 m
electrons from her hair to the comb
energy and time
Velocity is zero and acceleration is nonzero.
decreases and his kinetic energy remains the same
As a student runs a plastic comb through her hair, the comb acquires a negative electric charge. This charge results from the transfer of
1.5 x 10^2 J
Mass would be the same but its weight would be less on the Moon.
19 N
0.18 m
electrons from her hair to the comb
energy and time
Velocity is zero and acceleration is nonzero.
decreases and his kinetic energy remains the same
When 150 joules of work is done on a system by an external force of 15 newtons in 20. seconds, the total energy of that system increases by
1.5 x 10^2 J
Mass would be the same but its weight would be less on the Moon.
19 N
0.18 m
electrons from her hair to the comb
energy and time
Velocity is zero and acceleration is nonzero.
decreases and his kinetic energy remains the same
A ball is thrown straight upward from the surface of Earth. Which statement best describes the ball’s velocity and acceleration at the top of its flight?
1.5 x 10^2 J
Mass would be the same but its weight would be less on the Moon.
19 N
0.18 m
electrons from her hair to the comb
energy and time
Velocity is zero and acceleration is nonzero.
decreases and his kinetic energy remains the same
The horizontal component of the force acting on the crate is
1.5 x 10^2 J
Mass would be the same but its weight would be less on the Moon.
19 N
0.18 m
electrons from her hair to the comb
energy and time
Velocity is zero and acceleration is nonzero.
decreases and his kinetic energy remains the same
A spring with a spring constant of 68 newtons per meter hangs from a ceiling. When a 12-newton downward force is applied to the free end of the spring, the spring stretches a total distance of
1.5 x 10^2 J
Mass would be the same but its weight would be less on the Moon.
19 N
0.18 m
electrons from her hair to the comb
energy and time
Velocity is zero and acceleration is nonzero.
decreases and his kinetic energy remains the same
How would the mass and weight of an object on the Moon compare to the mass and weight of the same object on Earth?
1.5 x 10^2 J
Mass would be the same but its weight would be less on the Moon.
19 N
0.18 m
electrons from her hair to the comb
energy and time
Velocity is zero and acceleration is nonzero.
decreases and his kinetic energy remains the same
Which pair of quantities represent scalar quantities?
1.5 x 10^2 J
Mass would be the same but its weight would be less on the Moon.
19 N
0.18 m
electrons from her hair to the comb
energy and time
Velocity is zero and acceleration is nonzero.
decreases and his kinetic energy remains the same
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