Chapter 13 – Fluid Mechanics
Eight equal drops of water are falling through air with a steady velocity of 10 cm s^−1. If the drops combine to form a single drop big in size, then the terminal velocity of this big drop is
20
Sep
Eight equal drops of water are falling through air with a steady velocity of 10 cm s^−1. If the drops combine to form a single drop big in size, then the terminal velocity of this big drop is Eight equal drops of water are falling through air with a steady velocity of 10 cm s^−1. [...]
A drop of water of radius 0.0015 mm is falling in air. If the coefficient of viscosity of air is 2.0×10^−5kg/m s, the terminal velocity of the drop will be: (The density of water = 1.0 x 10^3 kgm^−3 and g=10ms^−2)
20
Sep
A drop of water of radius 0.0015 mm is falling in air. If the coefficient of viscosity of air is 2.0×10^−5kg/m s, the terminal velocity of the drop will be: (The density of water = 1.0 x 10^3 kgm^−3 and g=10ms^−2) A drop of water of radius 0.0015 mm is falling in air. If the [...]
The terminal speed attained by an aluminium sphere of radius 1 mm falling through water at 20 degree C will be close to ( Assume laminar flow, specific gravity of AI=2.7and η water = 8×10^−4 PI)
20
Sep
The terminal speed attained by an aluminium sphere of radius 1 mm falling through water at 20 degree C will be close to ( Assume laminar flow, specific gravity of AI=2.7and η water = 8×10^−4 PI) specific gravity of AI=2.7and η water = 8×10^−4 PI) The terminal speed attained by an aluminium sphere of radius [...]
Two spheres of the same material, but radii R and 3R are allowed to fall vertically downwards through a liquid of uniform density. The ratio of their terminal velocities is:
20
Sep
Two spheres of the same material, but radii R and 3R are allowed to fall vertically downwards through a liquid of uniform density. The ratio of their terminal velocities is: but radii R and 3R are allowed to fall vertically downwards through a liquid of uniform density. The ratio of their terminal velocities is: Two [...]
. A solid ball of volume ∨ experiences a viscous force F when falling with a speed v in a liquid. If another ball of volume 8 ∨ with the same velocity v is allowed to fall in the same liquid, it experiences a force
20
Sep
. A solid ball of volume ∨ experiences a viscous force F when falling with a speed v in a liquid. If another ball of volume 8 ∨ with the same velocity v is allowed to fall in the same liquid, it experiences a force . A solid ball of volume ∨ experiences a viscous [...]
The pressure increase in the fluid in a syringe when a nurse applies a force of 42 N to the syringe’s circular piston, which has a radius of 1.1 cm.
20
Sep
The pressure increase in the fluid in a syringe when a nurse applies a force of 42 N to the syringe’s circular piston, which has a radius of 1.1 cm. The pressure increase in the fluid in a syringe when a nurse applies a force of 42 N to the syringe's circular piston which has [...]
Water is in streamline flow along a horizontal pipe with nonuniform cross-section. At a point in the pipe where the a re a of cross-section is 10cm^2, the velocity of water is 1 ms^−1 and the pressure is 2000 Pa. The pressure at another point where the cross sectional area is 5cm^2 is.
20
Sep
Water is in streamline flow along a horizontal pipe with nonuniform cross-section. At a point in the pipe where the a re a of cross-section is 10cm^2, the velocity of water is 1 ms^−1 and the pressure is 2000 Pa. The pressure at another point where the cross sectional area is 5cm^2 is. the velocity [...]
A container of height 10 m which is open at the top, has water to its full height. Two small openings are made on the wall of the container one exactly at the middle and the other at the bottom. The ratio of the velocities with which water comes out from the middle and the bottom region respectively is.
20
Sep
A container of height 10 m which is open at the top, has water to its full height. Two small openings are made on the wall of the container one exactly at the middle and the other at the bottom. The ratio of the velocities with which water comes out from the middle and the [...]
A tank full of water has a small hole at the bottom. If one-fourth of the tank is emptied in t1 seconds and the remaining three-fourths of the tank is emptied in t2 seconds. Then the ratio t1/t2 is
20
Sep
A tank full of water has a small hole at the bottom. If one-fourth of the tank is emptied in t1 seconds and the remaining three-fourths of the tank is emptied in t2 seconds. Then the ratio t1/t2 is A tank full of water has a small hole at the bottom. If one-fourth of the [...]
Water is flowing in streamline motion through a horizontal tube. The pressure at a point in the tube is p where the velocity of flow is v. At another point, where the pressure is p/2, the velocity of flow is [density of water = ρ]
20
Sep
Water is flowing in streamline motion through a horizontal tube. The pressure at a point in the tube is p where the velocity of flow is v. At another point, where the pressure is p/2, the velocity of flow is [density of water = ρ] the velocity of flow is [density of water = ρ] [...]