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  3. 0.5 kg of a gas at temperature t1=20?c and pressur

0.5 kg of a gas at temperature t1=20?C and pressure p1=0.1 MPa was contained in a...

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Mechanical Engineering

0.5 kg of a gas at temperature t1=20?C and pressurep1=0.1 MPa was contained in a cylinder with a piston.The gas was compressed (polytropic process) and a ratio of heatexchanged during the process to the work of compression was ¼. Findthe final temperature and pressure of the gas if 15 KJ of heat wastransferred to the surroundings. Specific heats at constant volumeand pressure were 654.67 J/Kg/K and 897.64 J/kg/K,respectively.

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