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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 [...]
Two wires A and B of the same material have lengths in the ratio 1 : 2 and radii in the ratio 2 : 1. The two wires are connected in parallel across a battery. The ratio of the heat produced in A to the heat produced in B for the same time is
20
Sep
Two wires A and B of the same material have lengths in the ratio 1 : 2 and radii in the ratio 2 : 1. The two wires are connected in parallel across a battery. The ratio of the heat produced in A to the heat produced in B for the same time is A [...]
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] [...]
There are two electric bulbs of 40 W and 100 W. Which one will be brighter when first connected in series and then in parallel ?
20
Sep
There are two electric bulbs of 40 W and 100 W. Which one will be brighter when first connected in series and then in parallel ? There are two electric bulbs of 40 W and 100 W. Which one will be brighter when first connected in series and then in parallel ? September 20, 2020 [...]
There are two identical small holes on the opposite sides of a tank containing a liquid. The tank is open at the top. The difference in height between the two holes is h. As the liquid comes out of the two holes. The tank will experience a net horizontal force proportional to.
20
Sep
There are two identical small holes on the opposite sides of a tank containing a liquid. The tank is open at the top. The difference in height between the two holes is h. As the liquid comes out of the two holes. The tank will experience a net horizontal force proportional to. A hollow sphere [...]