A jet of water issues from a nozzle with a velocity of 20 m/s and impinges normally on a flat plate moving away from it at 10 m/s. If the cross-sectional area of the jet is 0.02 m2 and the density of water is 1000 kg/m3, the force developed on the plate is:

What will be the value of Chezy's constant 'C' if the velocity of flow 'V' is 1.506 m/s, bed slope is 1 in 2000 and hydraulic mean depth 'm' is 1.5 m?

Water is flowing through a rectangular channel. The width and depth of the channel are 830 cm and 140 cm, respectively. If the discharge through the channel is 600 cusecs, then the specific energy of flowing water and the value of minimum specific energy are ______ and ______, respectively.