A heat engine using a diatomic ideal gas goes through the, Ask an Expert

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A heat engine using a diatomic ideal gas goes through the following closed cycle: Isothermal compression until the volume is halved. Isobaric expansion until the volume is restored to its initial value. Isochoric cooling until the pressure is restored to its initial value.

What is the thermal efficiency of this heat engine?

What is the thermal efficiency a Carnot engine operating between the highest and lowest temperatures reached by this engine?

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