$015$

$10\mathrm{.}0$ points

A plane electromagnetic wave is propagating in empty space in the $+$x direction. At a cer$-$ tain point and at a given instant, the electric field of the wave is $57$ N$/$C in the $+$y direc$-$ tion. What are the magnitude and direction of the magnetic field at that point at the same instant? $($c $=3\mathrm{.}0108$ m$/$s$)$

$+$z

$+$x

$+$y