Question

At the surface of the ocean, the water pressure is the same  as the air pressure above the water, 15 lbyin2. Below the  surface, the water pressure increases by 4.34 lbyin2 for every  10 ft of descent.
(a) Express the water pressure as a function of the depth  below the ocean surface.
(b) At what depth is the pressure 100 lbyin2 ?

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