Physics Homework Question! Can someone help please?

  • Thread starter Thread starter ch33s3r
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ch33s3r

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What is the average magnitude of the Poynting vector 3.00 miles from a radio transmitter broadcasting isotropically with an average power of 250 kW?

I know the Poynting Vector is S = (1/mu) * ExB, but how do you obtain E or B from the values given?
 
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