Air enter a horizontal cylinderical pipe with creoss sectional area of 0.04m^2 operating at steady state at 280 k, 1 bar at flow rate of 0.3m^3/s, and exits at 325k, 0.95 bar. Assuming the the ideal gas model with k=1.4, determine
A) determine the mass flow rate in kg/s
B) determine the velocity at the inlet and exit in m/s
C) determine the rate of heat transfer in watts