problem19_41

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

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19.41: W is the area under the path from A to B in the pV -graph. The volume decreases, so W < 0. J 10 1.95 ) m Pa)(0.60 10 150 Pa 10 500 ( 5 3 3 3 2 1 × - = × + × - = W T nC U V = nR V p V p T T T nR V P T nR V p T 1 1 2 2 1 2 2 2 2 1 1 1 so , - = - = = = ) )( ( 1 1 2 2 V p V p R C U V - = J 10 015 . 5 )] m Pa)(0.80 10 150 ( ) m Pa)(0.20 10 500 )[( 315 . 8 85 . 20 ( 4 3 3 3 3 ×
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Unformatted text preview: -= ×-× = ∆ U Then gives W Q U-= ∆ J 10 2.45 J 10 1.95 J 10 015 . 5 5 5 4 ×-= ×-×-= + ∆ = W U Q Q is negative, so heat flows out of the gas....
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This document was uploaded on 02/06/2008.

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