Question

A container is filled to a depth of 20.0 cm with water. On top of the water floats a 30.0-cm-thick layer of oil with specific gravity 0.700. What is the absolute pressure at the bottom of the container?

Answer 1

Density of water = 1000 kg/m ³

The density of oil = 0.70 × 1000

= 700 kg/m ³

Acceleration due to gravity(g) = 9.8

The absolute pressure () at point B is given by

And so the pressure () at point A that is at the bottom of container is given by

=