Question

Cosmic microwave background radiation fills all space with an average energy density of 4 x 10 14 J/m3. (a) Find the rms value of the electric field associated with this radiation. (b) How far from a 7.5-kW radio transmitter emitting uniformly in all directions would you find a comparable value?

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Cople value com be found usine the SCE, 75 06 91

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