If a scuba diver descends too quickly into the sea, the internalpressure on each

Question

If a scuba diver descends too quickly into the sea, the internalpressure on each eardrum remains at atmospheric pressure while theexternal pressure increases due to the increased water depth. Atsufficient depths, the difference between the external and internalpressures can rupture an eardrum. Eardrums can rupture when thepressure difference is as little as 35 kPa. What is the depth atwhich this pressure difference could occur? The density of seawateris 1025 kg/m3.


NumberUnits Nounits°skgmm/skg/m^3NPaor N/m^2JW

Explanation / Answer

    Pressure difference, P = 35 kPa     Density of sea water, = 1025 kg/m^3     Depth, h = ?     Pressure exerted by sea water , P = h g                                            35000 = h * 1025 * 9.8     Depth, h = 3.484 m                  = 3.5 m

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