Question

A water tank is 20 m deep. What is the pressure at the
bottom of the tank in atmosphere?​

Answer 1

Answer:

Given:

h=20m

g=9.8m/s²

pressure at the bottom of the tank=P0 +hdg

=10⁵ +20x10 ³x9.8

=296 X 10³ pascal

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Answer 2

Answer:

3 atm

Explanation:

Pressure at the bottom of tank = Atmospheric pressure + pressure due to the liquid column.

i.e.

P = P₀ + ρ h g

P = ( 1 + ρ h g / P₀ ) atm

We have given :

Height h = 20 m

Putting value here we get

P = ( 1 + 20 ρg / 10⁵ )

P = 3 atm

Therefore , pressure at the  bottom of the tank in atmosphere is 3 atm.