Question: A uniform plane wave in a certain medium ( = 0 , 4 o ) is given by E = 12 cos(t 40x)a

A uniform plane wave in a certain medium (μ = μ0, ε4εo) is given by E = 12 cos(tω – 40πx)az V/m

(a) Find ω.
(b) If the wave is normally incident on a dielectric (μ = μo, ε = 3.2εo), determine Er and Et.

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