Water as saturated liquid at 1 bar enters a pump operating at steady state and is pumped isentropically to a pressure of 50 bar. Kinetic and potential energy effects are negligible. Determine the pump work input, in kJ per kg of water flowing, using (a) equation 6.51c, (b) an energy balance, and (c) obtain data from Tables A3 and A-5, as appropriate. Compare the results of parts (a)