Sample MidTerm 2 - Sample Mid-Term 2 Name_ MULTIPLE CHOICE....

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Sample Mid-Term 2 Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Two life preservers have identical volumes, but one is filled with styrofoam while the other is filled with sand. When the two life preservers are worn by swimmers so that one swimmer floats with part of the preserver above water, and the other swimmer sinks, the buoyant force is actually greater on the life preserver filled with A) sand. B) styrofoam. C) same 1) 2) If the polar icecaps melted, the resulting water would spread over the entire earth. This new mass distribution would tend to make the length of a day A) longer. B) stay the same. C) shorter. D) longer at first, then shorter. E) shorter at first, then longer. 2) 3) When a twirling ice skater brings her arms inward, her rotational speed A) decreases. B) remains the same. C) increases. 3) 4) Consider a bowling alley inside a rotating space torus (huge "donut"). Compared to your bowling experience on earth, you will notice that the ball A) feels heavier when you throw it in the direction of the moving alley, and lighter when you throw it in the opposite direction. B) feels lighter when you throw it in the direction of the moving alley, and heavier when you throw it in the opposite direction. C) veers to the right when you throw it in the direction of the moving alley, and to the left when you throw it in the opposite direction. D) none of these 4) 5) A swimming area in a rotating space habitat is located in a 1 4 g region. If a diver can jump 1 m high in a 1 g region, how high can the same diver jump in the swimming area? A) 4 m B) 16 m C) 1 m D) 2 m E) more than 16 m 5) 6) The faster a fluid moves, the A) less its internal pressure. B) greater its internal pressure. C) internal pressure is unaffected. 6) 1
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7) Two vertical tubes of equal cross-sectional areas are filled with water and mercury. If water is filled to a depth of 10.3 m and mercury to a depth of 0.76 m, both liquids have equal A) densities. B) viscosity. C) weights. D) volumes. E) none of these 7) 8) Which of the following is an example of matter in a plasma state? A) dry ice B) liquid hydrogen C) a torch flame D) molten lava E) none of these 8) 9) There is a legend of a Dutch boy who bravely held back the Atlantic Ocean by plugging a leak near the top of a dike with his finger until help arrived. Which of the following is most likely? A) The huge size of the Atlantic Ocean makes this impossible. B) Although the force on his finger would have been huge, the pressure would have been small enough for this to occur. C) Both the force and pressure on his finger would have been great, but not too great for a public-spirited Dutch lad. D) The force on his finger would have been less than 1 N.
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This note was uploaded on 11/18/2010 for the course CPHY 101 taught by Professor Jay during the Fall '10 term at University of Massachusetts Boston.

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Sample MidTerm 2 - Sample Mid-Term 2 Name_ MULTIPLE CHOICE....

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