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Assume you are a scuba diver preparing for a 30m dive into sea water of density 1025 kg/m3

a) if the denisty of air at sea level is 1.3kg/m cube, calculate the pressure difference in Pa and in mmHg between the bottom and top of your seaside hotel which is 30 m tall.

b) what are the gauge and absolute pressures in Pa you experience at a depth of 30 m in the sea?

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