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Question: an inventor comes to you with a device that produces...

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An inventor comes to you with a device that produces work. She tells you He gas at 10 atm and 650 K enters the device and exits at 2 atm and 260 K. Assume an ideal gas with constant specific heat and the surroundings are at 25 C. cp 5.2 kJ/kg-K. Is this possible?

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