A storage tank 28 m high is filled with gasoline. (Assume the tank is open and exposed to the atmosphere at the top.)
(a) Find the gauge pressure at the bottom of the tank.
(b) Calculate the magnitude of the net force that acts on a square access hatch at the bottom of the tank that measures 0.2 m by 0.2 m.
2- A modern-day zeppelin holds 8,500 m3 of helium. Compute its maximum payload at sea level. (Assume the helium and air to be at 0°C and 1 atm.)
3- A juniper-wood plank measuring 0.28 ft by 1 ft by 19 ft is totally submerged in water.(a) What is its weight?
(b) What is the buoyant force acting on it?
(c) What is the size and the direction of the net force on it?
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| direction |
---Select--- upward downward
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