Calculate heat transfer through cylinder wall, Mechanical Engineering

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Calculate Heat transfer through cylinder wall:

Calculate change in entropy and heat transfer through cylinder walls, if 0.4m³ of a gas at the pressure of 10bar and 2000C expands by the law PV1.35 = Constant. At the time of process there is loss of 380KJ of internal energy. (Take CP = 1.05KJ/kg k and CV = 0.75KJ/kgK)

Sol: ds = ?

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