# Question #da813

Apr 5, 2017

I tried this:

#### Explanation:

Pressure is Force over Surface or $\frac{N}{m} ^ 2$ (Newton divided by meter squared).

Multiply top and bottom by $m$:
$\frac{N m}{m} ^ 3$

But $N m = J$ Joule as in Work or Energy;

${m}^{3}$ is Volume;

so

$\text{Pressure} = \frac{J}{m} ^ 3$ energy per volume or energy density.