An electromagnetic wave strikes an area of A = 5.29 x 10$^{-4}$ m$^2$ section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be $B_{rms}$ = 2.11 × 10$^{-4}$ T. How long (time in milliseconds, ms) does it take for the wave to deliver U = 1,186 J of energy to the wall? Note that 1.0 s = 1000 ms. Therefore, multiply your answer by 1000. Please round your answer to one decimal place.
Equations:
$t = \frac{U}{P}$ where
$\overline{P} = \frac{c B_{rms}^2}{\mu_0} \times A$
$c = 3.0 \times 10^8$ m/s and $\mu_0 = 4\pi \times 10^{-7} \frac{Tm}{A}$