Calculate the rise of water inside a clean glass capillary tube of radius 0.1 mm when immersed in water of surface tension `7 xx 10^-2N//m`. The angle of contact between water and glass is zero, density of water = `1000 kg//m^3, g = 9.8 m//s^2`

Calculate the force required to take away a flat circular plate of radius 0.01 m from the surface of water. The surface tension of water is 0.075 N/m .

A capillary tube of diameter 0.6 mm dipped vertically into water. It rises to height of 6 cm in capillary tube, find the surface tension of water. (Given: density of water = 1000 kg//m^3, g = 9.8 m//s^2 ).

A long capillary tube of radius 0.2 mm is placed vertically inside a beaker of water. If the surface tension of water is 7.2xx10^(-2)N//m the angle of contact between glass and water is zero, then determine the height of the water column in the tube.

Calculate the density of paraffin oil, if glass capillary of diameter 0.25 mm dipped in paraffin oil of the surface tension 0.0245 N//m rises a height of 4 cm. (angle of contact of paraffin oil with glass is 28^@ and g=9.8m//s^2 )

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 ) g = 9.8m//s^2

The U -tube with limbs of diameters 6 mm and 3 mm contain water of surface tension 7xx10^(-2) N m^(-1) . The angle of contact is zero and density 10^3 kg m^(-3) . If g is 10 m s^(-2) , then the difference in levels in the two limbes is

A swimmer is swimming in a swimming pool at 6 m below the surface of the water. Calculate the pressure on the swimmer due to water above. (Density of water = 1000 kg/m^3, g = 9.8m/s^2)

A capillary tube of radius r is lowered into water whose surface tension is alpha and density d . The liquid rises to a height. Assume that the contact angle is zero. Choose the correct statement (s):