Gas within a chamber passes through the cycle shown in Fig. 18-40. Determine the

Question

Gas within a chamber passes through the cycle shown in Fig. 18-40. Determine the energy added to the system as heat during process CA if the energy added as heat QAB during process AB is 24 J, no energy is transferred as heat during process BC, and the net work done during the cycle is 11 J. Use a minus sign to indicate an energy decrease.

Gas within a chamber passes through the cycle shown in Fig. 18-40. Determine the energy added to the system as heat during process CA if the energy added as heat QAB during process AB is 24 J, no energy is transferred as heat during process BC, and the net work done during the cycle is 11 J. Use a minus sign to indicate an energy decrease.

Explanation / Answer

Since the process is complete one cycle the change in internal energy is zero and the heat aboserbed is equal to the workdone by the gas                                 Q = W                                        = W - Q_AB - Q_BC                                        = + 11.0 J - 24.0 J -0                                        = -13.0J negative sign indicates energy leaves the gas in the form of heat

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