Question

The deepest place in the ocean is the Marianas Trench in the western Pacific
Ocean, which is over 11.0 km deep. On January 23, 1960, the research sub Trieste went to a depth of
10.915 km, nearly to the bottom of the trench. This still is the deepest dive on record. The density of
sea water is 1025 kg/m3.
(a) What is the water pressure at that depth? Express your answer in atmospheres (atm).
(b) What was the force due to water pressure on a flat section of area 1.0 m2 on the top of the sub’s
hull?

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