A diver descends vertically in seawater of density 1025kgm−3. Atmospheric pressure at the ocean surface is 1.01×105Pa.
(a) Determine the diver’s gauge pressure when she is 18m below the surface.
(b) Calculate the absolute pressure experienced by the diver at that depth.
(c) Express the gauge pressure from part (a) in atmospheres, using 1atm=1.01×105Pa.