the pressure at a point below a point below the surface of the sea is caused by both the height of the water above that and the air pressure on the surface of the sea. if the diver reaches a depth of 20m below the surface on the surface of the sea

Question

Calculate The total pressure on him
density 1150
air pressure 1.0x10^5
g=9.8ms^-2
i am not sure how to work this question but so far i did this i multiplied the height and air pressure but that all.

Answer 1

pressure is measured in Newtons per square meter or Pascals

20 m below the surface, there are 20 cubic meters of water stacked up

20,000 kg * 9.8 m/s² = 2.0 x 10⁵ N

the water pressure is...2.0x10⁵ Pa

the total pressure is...3.0x10⁵ Pa

Answer 2

3. At what depth the water in the lake creates the pressure equal to atmospheric pressure of P0 = 105 Pa? Water density  = 103 kg/m3. Free fall acceleration is g = 10 m/s2.