An ideal gas with k = 1.4 is flowing through a nozzle such that the mach number is 1.6 where the flow area is 70 cm2. approximating the flow as isentropic, determine the flow area at the location where the mach number is 0.8. use data from tables. the flow area at the location where the mach number is 0.8 is cm2.

At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2