Liquid water is flowing through a 1 std type m copper tube at 30°c. the tube is 50 m long. higher than the outlet. as the water passes through this tube, it the inlet to the tube is 20 m experiences a pressure drop of 130 kpa. determine the volumetric flow rate of water through the tube.

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