Cosmic microwave background radiation fills all space with and average energy density of 4 x 10-14 J/m.

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