hw09T - ! ! !"#$%&'()*+,-)...

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© University of Maryland Physics Education Research Group, Fall 2006, Modified for Fall 2008 HW9-1 !"#$%&’( *+,- I. Operational definitions Two identical empty plastic bottles were outside on a hot afternoon. They were initially uncapped. At about three o’clock, a physicist tightly capped one of the bottles, bottle A. By midnight, the weather had turned very cold. When the physicist observed the bottles at midnight, she found that the sides of bottle A were caved in, but bottle B was the same shape it had been in the afternoon. Bottles at 3 P.M. Bottles at midnight Based on the information given, answer the following questions. Explain your reasoning. A. Did the mass of air inside bottle A increase, decrease, or remain the same from 3 P.M. to midnight? Explain. B. Did the volume of air inside bottle A increase, decrease, or remain the same from 3 P.M. to midnight? Explain. C.
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hw09T - ! ! !"#$%&'()*+,-)...

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