Q 3 0 25 kg of air at a pressure of 140 kN m occupies...
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Q 3 0 25 kg of air at a pressure of 140 kN m occupies 1 5 m and from this condition it is compressed to 1 4 MPa according to the law PV Constant Determine Change in internal energy of air The work done on or by the air Heat received or rejected by the air Take cp 1 005 kJ kg K cv 0 718 kJ kg K i ii iii
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