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Question: problem 5 a gas is compressed in a pistoncylinder assembly...

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PROBLEM 5 A gas is compressed in a piston-cylinder assembly from pi 4 bar to p 9 bar, V2 0.025 m2 in a polytropic process during which the relationship between pressure and volume is pV3 constant. The mass of the gas is 0.5 kg. If the specific internal energy of the gas increases by 70 kJ/kg during the process, determine the heat transfer, in kJ. You may neglect changes in KE and PE for the system.
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