Air flows steadily through a constant-area duct. At the entrance the velocity is 5 m/s and temperature is 300 K. The duct is heated such that at the exit the temperature is 600 K.
(a) If the specific volume (v) of air is proportional to the absolute temperature (in K) and the mass flow rate remains constant throughout the duct, determine the exit velocity.
(b) How would heating affect the pressure (0: remain same; 1: increase; -1: decrease)