To approximate an actual spark-ignition engine, consider an air-standard Otto cycle that has a heat addition of 2800 kJ/kg of air, a compression ratio of 9, and a pressure and temperature at the beginning of the compression process of 100 kPa, 20 degrees C. Assuming constant specific heat evaluated at 300K. determine: a. The maximum pressure and temperature of the cycle b. The thermal efficiency of the cycle c. The mean effective pressure.