quiz-2-02-08-11 - Print your name clearly Signature I agree...

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Print your name clearly: Signature: “I agree to neither give nor receive aid during this quiz.” Quiz 2 for Physics 176 Professor Greenside Tuesday, February 8, 2011 This 15-minute quiz is closed book and no electronic devices are allowed on your table. There are equations listed at the end of this quiz that may be helpful for some of the problems. All answers should be written on supplementary blank pages so that you will have plenty of space. Please write your name and problem number on each page. If your answer is not reasonably readable, you will lose credit. Unless stated otherwise, you need to explain or justify your reasoning to get full credit . Problems That Require Writing 1. (4 points) It is possible for an equilibrium system to have a negative temperature T . Using the fact that the entropy of an isolated nonequilibrium system must increase over time, dS/dt > 0, show that a negative temperature subsystem is hotter than any positive temperature subsystem in that heat will always transfer from the negative temperature subsystem to the positive temperature subsystem.
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