Air is compressed from an initial state of 1 bar and 25 c to a final state of 5 bar and 35 c by an adiabatic compression followed by cooling at constant volume. assume air to be an ideal gas with the constant heat capacities c= 5/2 r and cp- (7/2) r. calculate the work required, heat transferred, and the change in internal energy and enthalpy of air for each process.