In a capillary tube of diameter `10^-3m`, water rises to a height of 0.03 m. calculate the surface tension of water.

In an experiment to determine the surface tension of water by capillary rise, water rises to a height of 0.03m in a capillary tube of diameter 10^-3 m. If the angle of contact is negligibly small, calculate the surface tension of water.

Calculate the amount of energy neeeded to break a drop of water of diameter 2xx 10^-3 m into 10^9 droplets of equal size( Surface tension of water = 72xx 10^-31 N/m .

A ball is dropped from a height of 20m. it rebounds to a height on 10m. Calculate the loss of energy of the ball

The capillary rise in a tube of diameter 1mm when surface tension of water is 0.06 Nm^-1 is

Two capillary tubes of different diameter are dipped in water. The rise of water is:

Water rises in a capillary tube to a height 2cm. In another capillary tube whose radius is one third of it, how much the water will rise? If the first capillary tube is inclined at an angle 60^0 with the vertical, then what will be the position of water in the tube?

At which of the following temperatures the value of surface tension of water is minimun?

A man standing on the deck of a ship which is 10 m above the water level, observes the angle of elevation of the top of a hill as 60° and angle of depression of the base of a hill as 30°. Calculate the distance of the hill from the ship and the height of the hill.

A bullet of mass 10 g travelling horizontally with a velocity of 150 m s^-1 strikes a stationary wooden block and comes to rest in 0.03 s. Calculate the distance of penetration of the bullet into the block.