The solar pond shown in the figure, below, has a salt concentration that increases with

water depth. The resulting water density increases as shown. $($a$)$ Find the gauge pressure at

the bottom of the solar pond $($in kPa $)$; and $($b$)$ Calculate the gauge pressure if there were no

salt in the pond. Note that the equation provided in the graph $($below$)$ is $=1150-$

$120e^{-2d}$ where $\text{'}d\text{'}$ is in meters and $\text{'}\text{'}$ is in $k\frac{g}{m^3}.$

Solar pond