An ideal diesel engine uses air as the working fluid. the volume of the cylinder is 1200 cmº at the beginning of the compression process, 75 cm at the end, and 150 cm after the heat-addition process. the state of air at the beginning of the compression process is 100 kpa and 17 °c. determine (a) the pressure at the beginning of the heat-rejection process, (b) the network per cycle, and (c) the mean effective pressure.