MCAS Physics Exam Practice - Question List

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11. Two blocks of zinc with different masses are at room temperature. Each block then absorbs the same amount of heat over 10 minutes. When the temperature of each block is then measured, block 1 is at a higher temperature than block 2. Which of the following statements most likely describes the zinc blocks?
  1. The mass of block 1 is less than the mass of block 2.
  2. The mass of block 1 is greater than the mass of block 2.
  3. The specific heat of block 1 is less than the specific heat of
    block 2.
  4. The specific heat of block 1 is greater than the specific heat of block 2.
12. A rock climber weighs 550 N and is carrying a backpack that weighs 50 N. How much total work has been done after she climbs 12 m?
  1. 50 J
  2. 600 J
  3. 6000 J
  4. 7200 J
13. A 5 kg rock and a 10 kg rock are dropped from a height of 10 m. Which of the following statements describes what happens to the potential energy of the rocks?
  1. Neither rock loses potential energy because no work is done on the rocks.
  2. Both rocks lose the same amount of potential energy because they fall from the same height.
  3. The 10 kg rock loses more potential energy than the 5 kg rock because the 10 kg rock falls faster.
  4. The 10 kg rock loses more potential energy than the 5 kg rock because the 10 kg rock has more mass.
14. A student is driving her car when an insect strikes her windshield. Which of the following statements best describes the forces in this situation?
  1. The insect strikes the windshield with the same force as the windshield strikes the insect.
  2. The insect strikes the windshield with a force, and the windshield exerts no force on the insect.
  3. The insect exerts no force on the windshield, and the windshield strikes the insect with a large force.
  4. The insect strikes the windshield with a small force, and the windshield strikes the insect with a large force.
15. In which of the following examples is heat transferred primarily by radiation?
  1. A fan blows warm air around a room.
  2. A hot water bottle warms a person’s feet.
  3. Water vapor from a shower warms the room.
  4. A spoon held near the side of a flame gets warm.

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