A stone is held at a height h above the ground. A second stone with four times the mass of the first one is held at the same height
The gravitational potential energy of the second stone-Earth system compared to that of the first stone-Earth system is A) one-fourth as much.
B) one-half as much.
C) twice as much.
D) four times as much.
E) the same.
D
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Exhibit 12-1
The figure below shows a graph of angular velocity versus time for a woman bicycling around a circular track.
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Use this exhibit to answer the following question(s).
Refer to Exhibit 12-1. What is her angular displacement (in rad) in the first 12 minutes?
A. 0 B. 2? C. 4? D. 16? E. 32?
Which of the following items would not be considered "dark matter" by astronomers?
A) basketballs B) black holes C) weakly interacting massive particles D) red giants E) people
Ideal Gas Law: A sealed cylinder fitted with a movable piston contains ideal gas at 27°C, pressure 0.500 × 105 Pa, and volume 1.25 m3. What will be the final temperature if the gas is compressed to 0.800 m3 and the pressure rises to 0.820 × 105 Pa?
A. 42°C B. 68°C C. 130°C D. 250°C E. 150°C
What should be the angle between the reflecting surfaces of two plane mirrors in order for every incident beam to be parallel to its reflected beam?
A) 0° B) 30° C) 45° D) 60° E) 90°