A tall cylinder contains 25 cm of water. Oil is carefully poured into the cylinder, where it floats on top of the water, until the total liquid depth is 40 cm. What is the gauge pressure at the bottom of the cylinder

Explanation:

Given

Water column height

After oil is poured, the total height becomes

Pressure at the bottom will be the sum due to the water and oil column

Suppose the density of the oil is

Pressure at the bottom

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

battery with hi vtge high val resist in series