A submarine maintains 101 kPa inside it and dives 240 m down in the ocean having an average den

A submarine maintains 101 kPa inside it and dives 240 m...

A submarine maintains $101 \mathrm{kPa}$ inside it and dives $240 \mathrm{~m}$ down in the ocean having an average density of $1030 \mathrm{~kg} / \mathrm{m}^{3}$. What is the pressure difference between the inside and the outside of the submarine hull?

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Key Concepts

Gauge Pressure

Gauge pressure is the pressure measured relative to the ambient atmospheric pressure. It shows how much the actual pressure exceeds the atmospheric pressure. A reading of zero gauge pressure means that the fluid’s pressure is exactly equal to the atmospheric pressure.

Hydrostatic Pressure

Hydrostatic pressure is the pressure exerted by a static fluid due to gravity. It increases proportionally with depth according to the relation P = ?gh, where ? is the fluid density, g is the gravitational acceleration, and h is the depth. This principle helps determine how pressure changes in liquids as one goes deeper.

Atmospheric Pressure

Atmospheric pressure is the pressure exerted by the weight of the air in the Earth's atmosphere. It serves as the reference point for gauge pressure measurements. When gauge pressure is zero, it implies that the absolute pressure of the fluid is the same as the atmospheric pressure, which typically occurs at the surface of the fluid.

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