A source of electromagnetic waves radiates power uniformly in all directions at a single frequency. At...
A source of electromagnetic waves radiates power uniformly in
all directions at a single frequency. At a distance of 5.50 km from
the source, a detector measures the intensity of the wave to be
24.0 μW/m2. What is the peak value of the magnetic field
at the detector due to the wave?
4.48×10-10 T
What is the average power radiated by the source?
9.12×103 W
Now the detector is replaced with a perfectly absorbing sheet
normal to the incident flux, with surface area 1.90 m2.
What is the force on the sheet due to the wave
?
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