Air enters an adiabatic diffuser operating at steady state at 540 degrees R, with a velocity of 600 ft/s, and exits with a velocity of 60 ft/s. The ratio of the exit area to the inlet is 8. Assuming the ideal gas model for air and using variable specific heats, determine:
a) the temperature at the exit, in degrees R
b) The pressure at the exit, in psia.