Suppose you have an electric field as a result of superposition of two waves given by Ē(z, t) = Eo cos(kz − wt)â + Eŋ cos(kz+wt)â. Find the instantaneous and time-averaged energy density, the instantaneous and time-averaged momentum density.

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Suppose you have an electric field as a result of superposition of two waves given by
Ē(z, t) = Eo cos(kz – wt)â + Eo cos(kz+wt)â.
-
Find the instantaneous and time-averaged energy density, the instantaneous and
time-averaged momentum density.
Transcribed Image Text:Suppose you have an electric field as a result of superposition of two waves given by Ē(z, t) = Eo cos(kz – wt)â + Eo cos(kz+wt)â. - Find the instantaneous and time-averaged energy density, the instantaneous and time-averaged momentum density.
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