s $u_0,$ and

At $2\mathrm{.}0$ m from the bulb, what is the average energy density of the waves?

View Available Hint$($s$)$

$u_0$

$\sqrt[\phantom{2}]{\frac{1}{2}}{u}_0$

$\frac{1}{2}{u}_0$

$\frac{1}{4}{u}_0$