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qUESTIONS

With what velocity does water flow out of an orifice in a tank with gauge pressure 4 × 105 N/m2 before the flow starts? Density of water = 1000 kg/m3.

The speed of water is 2m/s through a pipe of internal diameter 10 cm. What should be the internal diameter of nozzle of the pipe if the speed of water at nozzle is 4 m/s?

With what terminal velocity will an air bubble 0.4 mm in diameter rise in a liquid of viscosity 0.1 Ns/m2 and specific gravity 0.9? Density of air is 1.29 kg/m3. [The negative sign indicates that the bubble rises up]

A horizontal force of 1 N is required to move a metal plate of area 102 m² with a velocity of 2 * 10 ^ – 2 * m / s when it rests on a layer of oil 1.5 * 10 ^ – 3 m thick. Find the coefficient of viscosity of oil.

Calculate the viscous force acting on a rain drop of diameter 1 mm, falling with a uniform velocity 2 m/s through air. The coefficient of viscosity of air is 1.8 x 10 Ns/m².

In a hydraulic lift, the input piston had surface area 30c * m ^ 2 and the output piston has surface area of 1500c * m ^ 2 If a force of 25 N is applied to the input piston, calculate weight on output piston.

Find the pressure 200 m below the surface of the ocean if pressure on the free surface of liquid is one atmosphere. (Density of sea water = 1060kg / (m ^ 3) )

Water flows through a tube as shown in the given figure. Find the difference in mercury level, if the speed of flow of water at point A is 2 m/s and at point B is 5 m/s. (g = 9.8m / s2)

Doors of a dam are 20 m below the surface of water in the dam. If one door is opened, what will be the speed of the water that flows out of the door? (g = 9.8m / (s ^ 2))

The given figure shows a streamline flow of a non-viscous liquid having density 1000 kg / (m ^ 3) The cross sectional area at point A is 2c * m ^ 2 and at point B is 1 cm². The speed of liquid at the point A is 5 cm/s. Both points A and B are at the same horizontal level. Calculate the difference in pressure at A and B.

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