When a rectangular lamina of height 150 mm is immersed in water vertically such that its top edge coincides with the water surface (rendering the depth of center of gravity as 75 mm), what is the depth of the center of pressure of the lamina?

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.