4. An ideal dual combustion cycle has a compression ratio of 10. At the beginning of compression, the pressure and temperature of air is 13 psia and 64 °F with a specific volume of 11.22 ft^3/lbm. Calculate the following if the heat added at constant volume and pressure is 150 BTU/lbm. a. The cycle temperature at the beginning of the heat rejection process in °R b. The cycle heat rejected, BTU/lb c. The cycle network, BTU/lb.