Air at 12.5 psia and 40°F enters an adiabatic diffuser steadily with a velocity of 520 ft/s and leaves with a low velocity as compared to the entrance at a pressure of 14 psia. The exit area of the diffuser is 4 times the inlet area. Determine the exit temperature of the air. What would be the actual velocity of the air at the exit with the results obtained above? If you were to use this exit velocity what result would you get for your temperature at the exit? Assume ideal gas by using variable specific heats.