Entropy: When water at 0°C freezes, the entropy of the water
A. increases.
B. decreases.
C. remains constant.
D. could either increase or decrease; it depends on other factors.
Answer: B
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If you were in a spaceship in outer space and accelerating at 0.5 g, how heavy would you feel?
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A string with a mass per length of 2.00 gm/m is stretched with a force of 120 N between two points that are 0.400 m apart. The fundamental frequency of the stretched string is in tune with the frequency of the second mode of an organ pipe filled with air and open at both ends. The velocity of sound in air at 0
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