Question

Find the change in density of water in ocean at depth of 700 m below the surface,.The density of water at the surface is$1000kg/m^3$ and the bulk modules of water is $4.9\times {10}^{9}N{m}^2$

• A. $2.4kg/m^3$
• B. $3.4kg/m^3$
• C. $1.4kg/m^3$
• D. $\frac{1}{700}kg/m^3$

Answer 1

The correct option is D $\frac{1}{700}kg/m^3$

$\frac{Vdp}{dv}=\beta$

$\frac{dv}{v}=\frac{pgdh}{\beta }$

$=\frac{100\times 10\times 700}{4.9\times {10}^9\times {10}^8}=\frac{1}{700}$.