a steady-flow compressor is used to compress helium from 15 psia and 70°f at the inlet to 200 psia and 600°f at the outlet. the outlet area and velocity are 0.01 ft2 and 100 ft/s, respectively, and the inlet velocity is 50 ft/s. determine the mass flow rate and the inlet area. answers: 0.0704 lbm/s, 0.133 ft
