problem20_45

University Physics with Modern Physics with Mastering Physics (11th Edition)

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20.45: There are many equivalent ways of finding the efficiency; the method presented here saves some steps. The temperature at point 3 is so and , 4 0 3 T T = , 2 19 2 ) 3 ( 2 5 ) 2 )( 2 ( ) ( 0 0 0 0 0 0 0 0 0 3 13 13 H V p V p nRT V V p T T nC W U Q V = + = - + - = + = where 0 0 0 V p nRT = has been used for an ideal gas. The work done by the gas during one
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Unformatted text preview: cycle is the area enclosed by the blue square in Fig. (20.22), , V p W = and so the efficiency is %. 5 . 10 19 2 H = = = Q W e...
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