Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 15 - The Laws of Thermodynamics - Search and Learn - Page 442: 2

Answer

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Work Step by Step

The first step, from 1 to 2, is an isothermal expansion. The volume increases, the pressure decreases, and the temperature stays the same. The second step, from 2 to 3, is at constant volume because no work is done. On a PV graph, it is a vertical line. The third and final step, from 3 back to 1, is adiabatic (Q is 0) and is a compression, since the work W is negative.
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