A heat engine using a diatomic gas follows the cycle shown in FIGURE P21.56. Its temperature at

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A heat engine using a diatomic gas follows the cycle shown in FIGURE P21.56. Its temperature at point 1 is 20°C.
a. Determine Ws, Q, and ΔEthfor each of the three processes in this cycle. Display your results in a table.
b. What is the thermal efficiency of this heat engine?
c. What is the power output of the engine if it runs at 500 rpm?

p (atm) 2 1.5- 1.0- 0.5 - - V (cm³) 40 10 20 30 FIGURE P21.56 3.

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