A scuba diver is exploring seawater of density 1.025×103kgm−3. The diver’s depth gauge reads 12 m below the calm surface of the ocean, which is exposed to atmospheric pressure of 1.01×105Pa.
(a) Calculate the gauge pressure experienced by the diver at this depth. Show all work and include units.
(b) Determine the absolute pressure on the diver at the same depth.
(c) The faceplate of the diver’s mask has an internal area of 0.20m2. Calculate the magnitude of the net force exerted by the seawater on the outside surface of the faceplate at this depth.