$12\mathrm{.}54$ CP The deepest point known in any of the earth$$s oceans is in the Marianas Trench, $10\mathrm{.}92$ km deep. $($a$)$ Assuming water is incompressible, what is the pressure at this depth? Use the density of seawater. $($b$)$ The actual pressure is

$1\mathrm{.}16$

$$

$10$

$8$

$$

Pa

;

your calculated value will be less because the density actually varies with depth. Using the compressibility of water and the actual pressure, find the density of the water at the bottom of the Marianas Trench. What is the percent change in the density of the water?