Water flows in a 10-in-diameter pipe at a velocity of 6 ft/s. Determine the diameter of the nozzle fitted at the end of the pipe if the jet velocity is 50 ft/s. Water flows in a rectangular open...

Water flows in a 10-in-diameter pipe at a velocity of 6 ft/s. Determine the diameter of the nozzle fitted at the end of the pipe if the jet velocity is 50 ft/s.

Water flows in a rectangular open channel of constant width through its entire length at a velocity of 1 m/s. The initial depth of flow was 2 m. After a certain hydraulic structure the depth was measured to be 1.2 m. Calculate the new velocity neglecting the head loss between the two sections.