Air in a piston cylinder undergoes a carnot power cycle with isothermal expansion at 1400 degrees kelvin and isothermic compression at 350 degrees kelvin. The compression pressure is 100kPa to 500kPa. assume an ideal gas with Cp= 1.005kJ/kg*K. A) What is the pressure at the end and beginning of the expansion. B)Determine heat transfer and work. C) Calulate the Thermal efficiency.