A simple ideal Brayton cycle uses argon as the working fluid. At the beginning of the compression, P₁ = 15 psia and T₁ = 80°F; the maximum cycle temperature is 1200°F; and the pressure in the combustion chamber is 150 psia. The argon enters the compressor through a 3 ft² opening with a velocity of 200 ft/s. Determine the rate of heat addition to this engine, the power produced, and the cycle’s thermal efficiency.