With what velocity does water flow out of an orifice in a tank with gauge pressure `4xx10^5 N//m^2` before the flow starts? Density of water=`1000kg//m^3`

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)

There are two holes each along the opposite sides of a wide rectangular tank. The cross section of each hole is 0.01 m^2 and the vertical distance between the holes is one meter. The tank is filled with water. The net force on the tank in newton when the water flows out of the holes is ( density of water = 1000 kg/m^3)

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 = 1060 kg /m^3)

Calculate total energy per unit mass possessed by water at a point where the pressure 0.1 xx 10^5N/m^2 with a velocity 0,02 m/s and height of water level from the ground is 10 cm . Density of water = 1000 kg/m^3 , g= 9.8 m/s^2 .

What is the pressure at the bottom of the ocean at a place where it is 3 km deep ? [atmospheric pressure =1.01 xx10^(5)Pa, Density of sea water =1030kg m ^(-3)]

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

If the density of oxygen is 1.44 kg//m^3 at a pressure of 10^5 N//m^2 , find the R.M.S. velocity of oxygen molecules.