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Use the following diagram to answer the next problem. An ideal heat engine uses 0.01 mol of gas and operates between a hot reservoir at
TH = 400 K and cold reservoir at TL = 300 K, in a cycle from a→b→c→d→a. From a→b the gas undergoes an isothermal expansion, changing its volume from Va to 2.5Va. From b→c, the pressure is reduced at a constant volume. From c→d, the gas undergoes an isothermal compression, and from d→a, the pressure is increased at a constant volume until the gas is back at the original condition at a.
-If the engine operates at 50 cycles per second,the power output is
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