What is the difference between the pressure on the bottom of a pool and the pressure on the water surface?   (B) ρg/h   (E) zero   (A) ρgh   (D) gh/ ρ   (C) ρ/gh

Find the pressure at the bottom of a tank containing a 3 m thick layer of mercury, a 2 m thick layer of water, and a 4 m thick layer of oil (D = 700 kg/m3). The tank is open to the air.

A manometer attached to a gas tank indicates that the pressure within is greater than the surrounding atmosphere. The manometric fluid is mercury, which has a density of 13.6 g/cm3. The manometer shows a reading of 54 cm. The atmospheric. pressure is 101 kPa, and the acceleration due to gravity is 9.8 m/s2

In the hydrostatic case shown in the following figure, a = 6 ft and c = 4 ft. Thespecific gravities of oil, mercury, and water are so = 0.8, sm = 13.6, and sw = 1.0. Pressurevariations in the air are negligible. What is the difference b in inches between the mercury levels?