Air enters an isentropic turbine at 145 psia and 900F through a 0.52 f^2 area with a velocity of 595 ft/s. It leaves at 15 psia with a velocity of 95 ft/s. Calculate the air temperature at the turbine exit AND the power produced by this turbine. I know how to solve for power and I thought I knew how to solve the whole problem, but my tables don't fit and extrapolating my S-value is not giving me the right answer.