Air enters a horizontal, constant-diameter heating duct operating at steady state at 280K, 1 bar, with a volumetric flow rate of 0.22m3/s, and exits at 325K,0.95 bar. The flow area is 0.04m2. Assuming the ideal gas model with k=1.4 for the air, determine: (a) the mass flow rate, in kg/s, (b) the velocity at the inlet and exit, each in m/s, and (c) the rate of heat transfer to the air, in kW. Part A Determine the mass flow rate, in kg/s. m1= Part B Determine the velocity at the inlet and exit, each in m/s. v1=2m/sv2= Part C Determine the rate of heat transfer to the air, in kW