4. Steam is flowing through an adiabatic nozzle at steady state, entering the nozzle with a pressure of 5 bar and a temperature of 400oC. The steam exits the nozzle at 1 bar and 350oC. a) Determine its exit velocity (m/s), assuming the inlet velocity is negligible. (3 pts) b) Determine its entropy generated (in kJ/kgK). (3 pts)