MCAS Physics Exams
MCAS 2011 Session 2
A. 50 J
B. 600 J
C. 6000 J
D. 7200 J
A. Neither rock loses potential energy because no work is done on the rocks.
B. Both rocks lose the same amount of potential energy because they fall from the same height.
C. The 10 kg rock loses more potential energy than the 5 kg rock because the 10 kg rock falls faster.
D. The 10 kg rock loses more potential energy than the 5 kg rock because the 10 kg rock has more mass.
A. The insect strikes the windshield with the same force as the windshield strikes the insect.
B. The insect strikes the windshield with a force, and the windshield exerts no force on the insect.
C. The insect exerts no force on the windshield, and the windshield strikes the insect with a large force.
D. The insect strikes the windshield with a small force, and the windshield strikes the insect with a large force.
A. light bulb
B. microwave oven
C. x-ray microscope
D. FM radio transmitter
A. 0.75 m/s left
B. 0.75 m/s right
C. 15 m/s left
D. 15 m/s right
A. A fan blows warm air around a room.
B. A hot water bottle warms a person’s feet.
C. Water vapor from a shower warms the room.
D. A spoon held near the side of a flame gets warm.
A. segment W
B. segment X
C. segment Y
D. segment Z
A. Sunlight can pass through gas.
B. Sunlight can pass through solids.
C. Sunlight can pass through liquids.
D. Sunlight can pass through a vacuum.
A. higher than the final temperature of the water
B. the same as the final temperature of the water
C. lower than the initial temperature of the water
D. the same as the initial temperature of the water
A. Electromagnetic waves travel faster than mechanical waves in air.
B. Electromagnetic waves have a higher frequency than mechanical waves.
C. Electromagnetic waves experience less interference than mechanical waves.
D. Electromagnetic waves form faster than mechanical waves during a thunderstorm.
A. Less mechanical energy is required when the bulb is lit.
B. More energy is put into the generator when the bulb is lit.
C. Less mechanical energy is required the longer the generator is turned and the bulb is lit.
D. The energy requirement of the generator is the same at any speed whether or not the bulb is lit.
A. As voltage increases, current decreases and resistance decreases.
B. As voltage increases, current increases and resistance stays the same.
C. As voltage increases, current decreases and resistance stays the same.
D. As voltage increases, current stays the same and resistance decreases.
A. Only vectors have direction.
B. Only scalars have magnitude.
C. Only scalars have units associated with them.
D. Only vectors have units associated with them.
A. 44 kg • m/s
B. 2,200,000 kg • m/s
C. 4,400,000 kg • m/s
D. 9,680,000,000 kg • m/s
A. 0.83 A
B. 1.2 A
C. 2.0 A
D. 22 A
A. point W
B. point X
C. point Y
D. point Z
Open-Response Questions
BE SURE TO ANSWER AND LABEL ALL PARTS OF THE QUESTION.
Show all your work (diagrams, tables, or computations) in your Student Answer Booklet.
If you do the work in your head, explain in writing how you did the work.
Refer to the following information for the next three questions.
a. Describe the motions of the sound waves and the water waves.
b. Draw a diagram for each of the waves you described in part (a). Be sure to label each diagram.
c. Describe how the wavelength is measured for the water waves.
Refer to the following information for the next four questions.
a. Determine the distance traveled by the car on this trip to the store. Show your calculations and include units in your answer.
b. Calculate the average speed of the car on this trip. Show your calculations and include units in your answer.
c. Determine the displacement of the car for this trip. Include units in your answer.
d. Calculate the average velocity of the car upon arrival at the store. Show your calculations and include units in your answer.
Refer to the following information for the next three questions.
a. Is energy absorbed or released by the cold lemonade? Explain your answer.
b. Compare average kinetic energy for the air molecules and lemonade molecules when the student first places the lemonade outdoors. Explain your answer.
c. Explain how and why the water droplets form on the outside of the glass.
MCAS Physics Exams
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