3. the electric field of a sinusoidal electromagnetic wave has an amplitude of 5.0 v/m. how much radiation energy passes through a 1.5 m2 window perpendicular to the wave during one hour? a) 258 j b) 459 j c) 351 j d) 531 j e) 179 j

e) J

Explanation:

= Magnitude of electric field = 5 V/m

= Area of window = 1.5 m²

= speed of electromagnetic wave = 3 x 10⁸ m/s

= time interval = 1 h = 3600 sec

radiation energy is given as

J

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grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered