165) A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is

166) A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.

167) The total pressure on an immersed surface inclined at an angle ? with the liquid surface is

168) Turbulent flow takes place at high velocities.

169) When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow.