Fluid Mechanics...

At a hydraulic jump, the flow depths are 0.4 m and 5 m at the upstream and downstream, respectively. The channel is wide rectangular. The discharge per unit width is nearly

What would be the critical velocity (in m/s, up to two decimal places) of the water flowing through a rectangular channel of width 10 m, when discharge is 20 m³/s? Take g = 10 m/s².

While conducting the flow measurement using a triangular notch, an error of +2% in head over the notch is observed. The percentage error in the computed discharge would be 

A wide rectangular channel 4 m wide and normal bed slope 1 in 5000 conveys a constant discharge of 30.0 m³/s. Let the normal depth of flow at a particular section is y_n.  Assume Manning’s n = 0.012. Which of the following is correct? 

What would be the specific force (in kN m³/kN, up to two decimal places) for a triangular channel of apex angle 90^°  and top width of 2 m if the water is flowing at the rate of 10 m³/s in the channel?  Take g = 10 m/s².

For a constant specific energy of 3.0 N-m/N, what would be the maximum discharge that may be possible in a rectangular channel of 2 m width? Take g = 10 m/s².

A rectangular channel of width 2 m is provided with hydraulic jump as an energy dissipator device at its downstream side.  It dissipates an energy equivalent to 2 m of water. Assume that energy dissipation is only due to hydraulic jump and there is no other loss in energy. The Froude number before the jump is 10 .  What would be the sequent depth (post jump depth) (in m, up to two decimal places) ?