Determine the absolute pressure on the bottom of a swimming pool 30.0 m by 8.7 m whose uniform depth is 1.8 m .

The absolute pressure at the bottom is 118983 pascals

Explanation:

The absolute pressure of on a fluid is:

(1)

with Patm the atmospheric pressure and Pgauge the pressure due the depth on the fluid that is :

(2)

With g the gravity acceleration, ρ the fluid density and h the depth, using (2) on (1):

A fast searching on physics books or websites you can find that g=9.81, ρ=1000 for water and Patm=101325Pa , so:

it takes about 30 days for it to break down

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.