Hydraulic jump occurs in a rectangular channel with the flow rate of 500 ft3/s and width of 10 ft. If the depth of flow before the jump is 3.1 ft, what would be the depth after the jump, head loss during the jump, and velocity after and before the jump

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?