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What is the pressure difference on your 0.5cm2 eardrum when you are 3.4 meters below the...

What is the pressure difference on your 0.5cm2 eardrum when you are 3.4 meters below the surface of a body of water? Assume the pressure difference was zero before your dive into the water?

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Answer #1

Pressure P = Pa + gh

where Pa = 1 atm. pressure = 1.013 105 Pa

= density of water = 1000 kg/m3

g = acceleration due to gravity = 9.8 m/s2

h = height of water column = 3.4 m

Let us assume , before entering water , pressure difference is zero means,

internal pressure of ear drum is at atmospheric pressure

Hence pressure difference = P - Pa = gh = 1000 9.8 3.4 = 3.332 104 Pa

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