Recent questions tagged chapter10

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What is stoke’s law and what are the factors on which viscous drag

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Water flows through a horizontal pipe of which the cross – section is not constant. The pressure is 1cm of mercury where the velocity is 0.35m/s. Find the pressure at a point where the velocity is

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What is terminal velocity and derive an expression for

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What is equation of continuity? Water plows through a horizontal pipe of radius, 1cm at a speed of 2m/s. What should be the diameter of nozzle if water is to come out at a speed of

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What is Bernoulli’s theorem? Show that sum of pressure, potential and kinetic energy in the streamline flow is

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What is conserved in Bernoulli’s

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If the rate of flow of liquid through a horizontal pipe of length l and radius R is Q. What is rate of flow of liquid if length and radius of tube is

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Water is coming out of a hole made in the wall of tank filled with fresh water. If the size of the hole is increased, will the velocity of efflux

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The accumulation of snow on an aero plane wing may reduce the lift.

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Two pipes P and Q having diameters `2 × 10^(-2_ m and 4 × 10^(-2) m` respectively are joined in Series with the main supply line of water. What is the velocity of water flowing in pipe

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A horizontal pipe of diameter 20 cm has a constriction of diameter 4 cm. The velocity of water in the pipe is 2m/s and pressure is `10 N`/`m^2`. Calculate the velocity and pressure at the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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The reading of a pressure metre attached to a closed is `2.5 × 10^5 N`/`m^2`. On opening the valve of pipe, the reading of the pressure metre reduces to `2.0 × 10^5 N`/`m^2`. Calculate the speed of water flowing through the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A large bottle is fitted with a siphon made of capillary glass tubing. Compare the Co-efficient of viscosity of water and petrol if the time taken to empty the bottle in the two cases is in the ratio 2:5. Given specific gravity of petrol =

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Under a pressure head, the rate of flow of liquid through a pipe is Q. If the length of pipe is doubled and diameter of pipe is halved, what is the new rate of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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In a horizontal pipeline of uniform area of cross – section, the pressure falls by `5 N`/`m^2` between two points separated by a distance of 1 Km. What is the change in kinetic energy per Kg of oil flowing at these points? Given Density of oil = 800

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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1) Water flows steadily along a horizontal pipe at a rate of `8 × 10^(-3)m^3`/s. If the area of cross – section of the pipe is `40 × 10^(-4) m^2`, Calculate the flow velocity of water.2) Find the total pressure in the pipe if the static pressure in the horizontal pipe is `3 × 10^4 Pa`. Density of water is `1000 Kg`/`m^3`.3. What is the net flow velocity if the total pressure is `3.6 × 10^4

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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The two thigh bones (femurs), each of cross-sectional area 10 `cm^2` support the upper part of a human body of mass 40 kg. Estimate the average pressure sustained by the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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What is the pressure on a swimmer 10 m below the surface of a

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The density of the atmosphere at sea level is 1.29 kg/`m^3`. Assume that it does not change with altitude. Then how high would the atmosphere

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At a depth of 1000 m in an ocean (a) what is the absolute pressure? (b) What is the gauge pressure? (c) Find the force acting on the window of area 20 cm × 20 cm of a submarine at this depth, the interior of which is maintained at sealevel atmospheric pressure. (The density of sea water is `1.03 × 10^3` kg `m^(-3)`, g = 10 m

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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