What is the average total energy density in electromagnetic radiation that has an intensity of 475 w/m^2?

1.6 x 10⁻⁶ J/m³

Explanation:

I = Intensity of electromagnetic radiation = 475 Wm⁻²

U = average total energy density of electromagnetic radiation

c = speed of electromagnetic radiation = 3 x 10⁸ m/s

Intensity of electromagnetic radiation is given as

Inserting the values

U = 1.6 x 10⁻⁶ J/m³

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