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quiz4a

# quiz4a - Physics 2CA Quiz 4A Name MULTIPLE CHOICE Choose...

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Physics 2CA Quiz 4 A Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A water tank is filled to a depth of 40m and the tank bottom is 10m above ground. What water pressure is present in a hose 4cm in diameter at ground level? The hose it attached on one end to the bottom of the tank. The density of water is 1000kg per cubic meter. A) 3e5 N per square meter. B) 9 N per square meter. C) 2e4 N per square meter. D) The cross sectional area of the tank is needed to solve this problem. E) 5e5 N per square meter 1) 2) Consider a tank of water with 24cm diameter filled with water to a height of 70cm. Consider a very small hole at height 20cm from the bottom. Find the speed at which the water exits the tank through the hole. (Density of water = 1000kg/m^3) A) 2m/s B) 3m/s C) 5m/s D) 7m/s E) can't tell unless the diameter of the hole is known. 2)

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