A discharge of 18 m/sec flows through a rectangular channel 6 m wide at a depth of 1.6 m, Find: a. The specific energy head. b. The critical depth and the corresponding minimum specific energy c. State whether the flow is subcritical or supercritical d. What is the depth alternate to the depth given above? e. Draw the S.E.D for the given discharge and geometry and show the above values on it.