how much pressure on a person at the bottom of a 12 ft pool

Answer 1

5.2 PSIG OR 19.9 PSIA

Answer 2

Pressure = atmospheric pressure + the pressure of the water

Pressure of the water = density of water x gravity x height of water

density of water = 1x10³ kg/m³

gravity = 9.8 m/s²

height of water = 12 ft x 0.3048 m/ft = 3.7 meters

Pressure of water = (1x10³ kg/m³)(9.8 m/s²)(3.7 meters) = 3.6x10⁴ kg/ms² = 3.6x10⁴ Pa

If we assume that atmospheric pressure is 1.01x10⁵ Pa, then total pressure exerted is...

1.01x10⁵ Pa + 0.36x10⁵ Pa = 1.37x10⁵ Pa = 1.37x10² kPa = 137 kPa