The flow of water from a container is controlled by a 5-ft-wide L-shaped gate hinged at point A, as shown in the figure. If it is desired that the gate open when the height of the water is 10 ft, determine the weight W of the counterweight to achieve this. Take d= 5 ft and H = 16 ft.

Q1) If the vertical component of the hydrostatic force on the gate BC shown in fig.1 is 1200 kN.Calculate : 1- the width of the gate 2- the horizontal component (Fu) 3- the angle at which the resultant will act (the direction of the resultant). Water 5m C 5m 4m

2. A spherical balloon containing Oxygen (initially at sea level) has a diameter of 8in. If the uniform density of air is 0.07498lb/ft3 and that the pressure at sea level is 14.7psia, determine the new diameter (inch) of the balloon if it has been brought above sea level by 6000ft. Draw a figure or FBD that will support the problem. Explain each step by step formula.

A bicycle tire pump has a piston with area 0.44 inches squared. If a person exerts a force of 30 lb on the piston while inflating the tire, what pressure does this produce on the air in the pump? Give your answer in psi.

Please answer with a good explantion so I can understand the problem

A graduated cylinder has a mass of 100 gm when empty. When 30 ml of water is added, the graduated cylinder has a mass of 130 gm. If a stone is added to the graduated cylinder, the water level rises to 65 ml. and the total mass is now 189 gm. What is the density of the stone? * 3.11 gm/ml O 2.71 gm/ml 1.68 gm/ml O 2.24 gm/ml How much force does the atmosphere exert on one side of a vertical wall 4.0 m high and 10.0 m long ? * 4.05 X 10 °N 2.53 X 10° N O 1.93 X 10 *N 3.18 X 10 °N Find the absolute pressure at a depth of 8 ft. on a bottom of a swimming pool filled with fresh water. * 16.13 psi O 15.4 psi 17.2 psi O 18.14 psi