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What is the pressure on a scuba diver at...

What is the pressure on a scuba diver at a depth of 30 m?

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As 1 atm`=10m` of water column, pressure due to 30 m of water column`=(30m)/((10m)/(atm))=3atm`
Total pressure on the scuba diver`=`atmospheric pressure`+` pressure due to water column (30 m depth) `=1atm+3atm=4atm`.
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