Answer Happy

Need help solving part B please
A Brayton cycle operates with air with minimum and maximum temperatures of 27 °C and 727 °C. It is designed so that the maximum cycle pressure is 2000 kPa and the minimum cycle temperature is 100 kPa. The isentropic efficiencies of the turbine and compressor are both 90 percent. Using constant room temperature specific heats, (a) determine the net work produced per unit mass of air each time this cycle is executed, in kJ/kg (enter numerical value only without units). Answer: 66.75 Check Correct Marks for this submission: 6.0/6.0. (previous problem continued) ... (b) Determine the cycle's thermal efficiency. Remember that the cycle is not an ideal cycle. Submit your answer as a decimal number (not a percentage). Answer: 26.69 x Check Incorrect Marks for this submission: 0.0/6.0.