A fish normally displaces its own
A) volume of water.
B) weight of water.
C) both of these
D) neither of these
Answer: C
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When a liquid boils, the increase in volume is typically a factor of
A. 10 B. 100 c. 1000 D. 1,000,000
A champion athlete can produce one horsepower (746 W) for a short period of time. If a 70-kg athlete were to bicycle to the summit of a 500-m high mountain while expending power at this rate, she would reach the summit in ____ seconds
a. 1 b. 460 c. 500 d. 1000 e. 35,000
Is it possible for speed to be constant while acceleration is not zero? Give an example of such a situation.
A. An object moving in a circle with uniform speed has no change of speed but it has acceleration. It has centripetal acceleration towards the center of the circle. B. An object moving in a triangle with non-uniform speed has no change of speed but it has acceleration. It has scalar acceleration towards the center of the triangle. C. An object moving in an ellipse with uniform speed has no change of speed but it has momentum. It has centripetal acceleration towards the tangent of the circle.
Salt water is denser than fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt water is
A) less. B) more. C) the same. D) Cannot be determined because we do not know the volume of the ship.