Ahydraulic jump is situated in a 4-m wide rectangular channel. the discharge in the channel is 7.5 m3/sec, and the depth upstream of the jump is 0.20 m. determine the depth downstream of the jump, the upstream and downstream froude numbers, and the rate of energy dissipated by the jump.

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