The deepest point in any ocean is in the Mariana Trench, which is about 11 km deep, in the Pacific. The pressure at this depth is huge, about . (Take the bulk modulus of seawater to be .
a) Calculate the change in volume of 1.00 m^3 of seawater carried from the surface to this deepest point.
b) The density of seawater at the surface is 1.03x10^3 kg/m3. Find its density at the bottom.
c) Explain whether or when it is a good approximation to think of water as incompressible.
