How much energy is transported across a 1.0 cm^2 area per hour by an EM wave whos E filed has an rms strengh of 38.6 m V/m?
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The Electric field in an EM wave in free space has a peak of 21.8 mV/m. what is the average rate at which this wave carries energy across unit area per unit time?
Suppose a 45 kW radio station emits EM waves uniformly in alldirections.(a) How much energy per second crosses a 4.0 m2 area 100 m from thetransmitting antenna?W(b) What is the rms magnitude of the E field at this point,assuming the station is operating at full power?(c) What is the voltage induced in a 1.0 m long vertical carantenna at this distance?
An EM plane wave traveling along the x-axis has an effective cross-sectional area of 1.5 cm^2, a maximum electric field of 1500 N/C and a frequency of 4*10^15 Hz. Find each of the following quantities: its maximum B field, energy density, the intensity of the wave, and the energy striking a 0.5 cm^2 area with its normal along the x-axis in 10 s.