Two kilograms of air within a piston-cylinder assembly execute a carnot power cycle with maximum and minimum temperatures of 750k and 300k, respectively. The heat transfer to the air during the isothermal expansion is 60kj. At the end of the isothermal expansion, the pressure is 600kPa and the volume is 0.4 m^3. Assuming the ideal gas model for air, determine:
A) thermal efficiency
b)the pressure and volume at the beginning of the isothermal expansion, in kPa and m^3, respectively.
C) the work and heat transfer for each of the four processes, in kj
d)sketch the cycle on p-V coordinates