A hemispherical tank of diameter 4 m contains water up to a height of 2.0 m. An orifice of diameter 50 mm is provided at the bottom. Find the time required by water (i) to fall from 2.0 m to 1.0 m (ii) for completely emptying the tank. Take Cd= 0.6

1. An open trapezoidal tank is accelerated horizontally at 6m/s2 along its length. Its bottom width is 4.20m and its sides are inclined at 3H:4V. If it has a height of 3m, width of 2m and it is filled with water at a height of 2.5m, how much water is spilled out in m3.. 2. A cylindrical shape solid container of sg=0.515 having a diameter of 1.5m and a height of 3.10m is floating in a seawater of sg=1.03. Attached at the bottom of the container is a steel ball of sg= 7.85. If the height of the container projecting above the fluid surface is 0.60m. Determine the diameter in m and weight in KN of the steel ball.

The water level in a tank is 34 ft above the ground. A hose is connected to the bottom of the tank at the ground level and the nozzle at the end of the hose is pointed straight up. The tank cover is airtight, but the pressure over the water surface is unkown. Determine the minimum tank air pressure (gage) that will cause a water stream from the nozzle to rise 72 ft from the ground. (WITH FREE BODY DIAGRAM) CHOICES: A.16.5 psi B.15.5 psi C.13.5 psi D.14.4 psi

vessel cylindrical in shape and closed at the top and bottom is 300 mm in diameter, 1 m long and contains water up to a depth of 0.8 m. The air above the water surface is at a pressure of 60 kN/m2 . If the vessel is rotated at a speed of 250 r.p.m. about its vertical axis find the pressure head (in cm of water) at the center bottom of the vessel a.567.2 b.845 c.643.9 d.722.5