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An electromagnetic wave traveling in free space
has an electric field given by:
E = 120 V/m (v5j – 2k ) cos[9 × 1015t + 107(2xĵ + v5k)]
Calculate the corresponding irradiance (c = 3 x
108 m/s;µo = 1.257 × 10-6 S. I unit; €, = 8.854 × 10-12 S. I unit).
162.0 W/m^2
O 172.1 W/m^2
234.3 W/m^2
224.1 W/m^2
O 119.5 W/m^2
109.4 W/m^2

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