A plane wave in a nonmagnetic medium has E $550$ sin$1108$ t $12$z$2$ay V$/$m$.$ Find $($a$)$ The direction of wave propagation $($b$)$ l$,$ f$,$ and er $($c$)$ H Answer: $($a$)$ in the $2$zdirection, $($b$)3\mathrm{.}142$ m$,15\mathrm{.}92$ MHz$,36,($c$)0\mathrm{.}7958$ sin$1108$ t $12$z$2$ax A$/$m$.$