A plane wave in air $($x$<0)$ is normally incident into a lossless material space with$2,4==$ rr

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$($x$>0).$ If the incident electric field is pointing in y direction and is $3$V$/$m at x$=0,$

$($a $)$ Write the phasor of the incident electric field.

$($b $)$ Calculate the reflection and transmission coefficient.

$($c $)$ Calculate the standing wave ratio.

$($d $)$ Write the total electric field in the air and in the dielectric material space.

$($e $)$ The time average power density for the incident wave, the reflected wave, and the

transmitted wave.