ch18-p043 - 43. Over a cycle, the internal energy is the...

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W = W AB + W BC + W CA = 60 J – 90 J + 0 = –30 J and the total heat absorbed is Q = W = –30 J. This means the gas loses 30 J of energy in the form of heat. 43. Over a cycle, the internal energy is the same at the beginning and end, so the heat Q absorbed equals the work done: Q = W . Over the portion of the cycle from A to B the pressure p is a linear function of the volume V and we may write 3 10 20 Pa + Pa/m , 33 p V §· = ¨¸ ©¹ where the coefficients were chosen so that p = 10 Pa when V = 1.0 m 3 and p = 30 Pa when V = 4.0 m
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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