Question: A plane electromagnetic wave with the electric field by E= 60 cos (kz-cot) is incident normally from air on a medium characterized by permitivity

A plane electromagnetic wave with the electric field by E= 60 cos

A plane electromagnetic wave with the electric field by E= 60 cos (kz-cot) is incident normally from air on a medium characterized by permitivity 4, and permeability .. The electric field of the reflective wave is O -10 cos (kz - cot) x -20 cos (kz + cot) x -20 cos (kz - cot) x O-10 cos (kz+wot) x

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