10.(a) At what water depth is the pressure twice atmospheric pressure? (b) What is the pressure at the bottom of the 11-km-deep in the ocean? Take atmospheric pressure as 100 kPa and the density of water as 1000 kg/m3.
Answer. Pressure under water is given by the sum of atmospheric pressure and pressure of fluid. Thus, depth in water at which pressure will be equal to twice the atmospheric pressure is 10.2 m.
