In the Challenger Deep of the Marianas Trench, the depth of seawater is 10.9 km and the pressure is 1.16×10^8 Pa, (about 1.15x10^3 atm). (A) If a cubic meter of water is taken from the surface to this depth, what is the change in its volume? (normal atm pressure is about 1.0x10^5 P). Assume that k for seawater is the same as for freshwater (B) At the surface, seawater has a density of 1.03×10^3 kg/m^3. What is the density of seawater at the depth of the Challenger Deep?

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Variation of pressure

From the equation of pressure, pressure is directly proportional to the applied force.