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Unformatted text preview: while keeping the quantity P (3 V V ) constant. a. What is the Fnal pressure? b. ind the initial and Fnal temperatures and E int for the process. c. ind the work done by the gas and the heat input. [In Fnding the work, make the substitution x = 3 V V in the integral.] a. We have P 2 V = P V , or P = 2 P . b. The initial temperature is T = P V / R ; the Fnal temperature is T = 2 P 2 V / R = 4 T . This gives E int = c V T = 3 2 R 3 T = 9 2 P V . c. The work is W = 2 P V dV 3 V V V 2 V . Making the suggested substitution we have W = 2 P V dx x V 2 V = 2 P V ln(2) . The heat input is Q = E int + W = P V ( 9 2 + ln 2) . Physics 53 Summer 2010 2...
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This note was uploaded on 10/19/2011 for the course PHYSICS 53L taught by Professor Mueller during the Spring '07 term at Duke.
- Spring '07