Doors of a dam are 20 m below the surface of water in the dam. If one door is opened, what will be the speed of the water that flows out of the door?(`g=9.8m//s^2`)

The pressure on a swimmer 20 m below the surface of water at sea level 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)

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

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. rho_1=1000 kg//m^3 , g=9.8 m//s^2

A water tank on the ground with water upto a height of 20 m has a small orifice in its wall at a distance 10 m below the surface level of water. Then the horizontal distance from the hole at which the water touches the ground is

What is the weight of a body of mass 20kg at the equator ?(g=9.78 m/s^2)

Solve the following example : The mass of a tile is 500 g. If the density of the tile is 2.5 g//cm^3 . What will be the weight of the tile when it is completely immersed in water ? (g = 9.8 m//s^2, rho (water) = 1000 kg//m^3)