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Physics, 24.02.2020 18:30 junior1391

Air is contained in a variable-load piston–cylinder device equipped with a stirring paddle wheel. Ini-tially, air is at400kPa and17°C. The paddle wheel is now turned by a motor until75kJ/kg of workhas been transferred to air. Model the air as an ideal gas with constant specific heats and calculate theamount of heat transfer per unit mass that is needed to maintain a constant air temperature whileallowing the gas volume to triple.

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