Thirty-six grams of air in a piston-cylinder assembly undergo a Stirling cycle with a compression ratio of six. At the beginning of the isothermal compression, the pressure and volume are 1 bar and 0.03m3, respectively. The temperature during the isothermal expansion is 1000 K. Assuming the ideal gas model and ignoring kinetic and potential energy effects, determine a. the net work, in kJ. b. the thermal efficiency.