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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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
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?
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°
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