Answer:
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20 Watts
Explanation:
Work = force × distance
W = (20 N) (10 m)
W = 200 Joules
Power = work / time
P = 200 J / 10 s
P = 20 Watts
Below is an attachment containing the solution.
Both, there are two different types of molecules to distinguish that
E₀ = 229.1 V/m
E = E₀ / √2 = 229.1 / 1.414 = 162 V/m
B = E / c ( c is velocity of em waves )
= 162 / (3 x 10⁸) = 54 x 10⁻⁸ T
rate of energy flow = ( E x B ) / μ₀
= 162 x 54 x 10⁻⁸ / 4π x 10⁻⁷
= 69.65 W per m².
