Whirl a rock at the end of a string and it follows a circular path. If the string breaks, the rock tends at first to
A) continue in a circular path.
B) follow a straight-line path.
C) spiral inward.
D) fall straight downward.
Answer: B
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Exactly 500 grams of ice are melted at a temperature of 32°F. (LF,ice = 333 J/g.) The change in entropy (in J/K) is
A. 321. B. 146. C. 512. D. 610. E. 5230.
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A sound wave in a metal bar is an example of a longitudinal wave
Indicate whether the statement is true or false