Water flows through a pipe at a rate of 20 cfm. the diameter of the pipe is constant at 2 inches. the pressure drop across the 90 °bend in the pipe is 1 kpa. determine the head loss of the bend in meter. assume the density of water to be 1000 kg/m^3 and do not consider major head loss.

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