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Posted by on Friday, March 22, 2013 at 9:19pm.

At the surface of a freshwater lake the pressure is 102 kPa.

(a) What is the pressure increase in going 34.7 m below the surface?
b) What is the approximate pressure decrease in going 33 m above the surface? Air at 20° C has density of 1.2 kg/m3.

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