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A series of six physics problems related to buoyancy and density. Students are asked to determine the height of a water column instead of mercury, the buoyant force on bricks and plastic pieces, and the effect of melting ice on water level. Each problem is followed by multiple choice answers.
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Mercury is 14 times as dense as water. If we measured the air pressure with a water barometer instead of a mercury barometer, how high would the column of water be, compared to the height of the mercury column? A: the same height B: 14 times higher. C: 14 times shorter. vacuum air pressure
Two bricks are held under water in a bucket. One of the bricks is lower in the bucket than the other. The upward buoyant force on the lower brick is... A: greater B: smaller C: the same as the buoyant force on the higher brick.
A solid piece of plastic of volume V, and density plastic is floating in a cup of water. (The density of water is water.)What is the buoyant force on the plastic? A: Zero B: plastic V C: water V D: water V g E: plastic V g
An icecube is floating in a glass of water. As the icecube melts, the level of the water... A: rises. B: falls. C: stays the same.
