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A mass of gas at an initial internal energy of 300 kJ is allowed to expand behind a piston untill it's internal energy is 200 kJ, the value of final pressure and volume are 4.59 bar and 0.148 m^3 respectively, the law of expansion is PV^2 =C calculate
1) work done
2) initial volume.
Air flows steadily at a rate of 0.85 kg/s through an air compressor, entering at 10 m/s speed, 150 KPa pressure and 1.35 m3/kg specific volume and leaving at 8 m/s and 0.53 m3/kg.
Determine the value of leaving pressure and the change in specific enthalpy if the internal energy of the air entering is 105 KJ/kg greater than that of the air leaving. Cooling water in the compressor jackets add heat to the air at the rate of 60KW and the work done on the system is 106.58 kW
starting from rest. In the first second, it travels ____?
