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doodles

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A submarine is submerged to a depth of 3150 ft in the Atlantic Ocean. What air pressure (in kpa) is needed to blow water out of the ballast tanks?

I know the answer is 9410 kpa but I have been going in circles trying to figure this out.

P=hd using seawater density of 64.0 pound feet cubed did not work for me.

Thanks for helping:)

Doodles

I know the answer is 9410 kpa but I have been going in circles trying to figure this out.

P=hd using seawater density of 64.0 pound feet cubed did not work for me.

Thanks for helping:)

Doodles

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