The pressure exerted by a liquid at a depth of 2.5m is 36,750 Pa. What is the density of the liquid, to the nearest kg/m³?
A pool containing a liquid with a density of 1,000 kg/m³ at the surface of an unknown planet produces a pressure of 8,400 Pa at a depth of 2.4 m. What is the acceleration due to gravity (g)at the surface of the planet?

Explanation:

Given

The pressure exerted at a depth of is  

Also, the gauge pressure is given by

Putting values

(b)

The density of the liquid is

depth

Pressure

We can write

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