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Physics-

General

Easy

Question

The rms value of the electric field of the light coming from the sun is 720 N/C The average total energy density of the electromagnetic wave is

$3.3 \times 10^{- 3} J / m^{3}$
$4.58 \times 10^{- 6} J / m^{3}$
$6.37 \times 10^{- 9} J / m^{3}$
$81.35 \times 10^{- 12} J / m^{3}$

The correct answer is: $4.58 cross times 10 to the power of negative 6 end exponent J divided by m to the power of 3 end exponent$

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