Use constant specific heats at room temperature. Round all answers to one decimal place. A simple Brayton cycle operates with air with minimum and maximum temperatures of 27 degree C and 727 degree C. It is designed so that the maximum cycle pressure is 2,000 kPa and the minimum cycle pressure is 100 kPa; the isentropic efficiency of the turbine is 86.4 percent. Determine the net work produced per unit mass of air each time this cycle is executed and the cycle's thermal efficiency.