An AM radio transmitter broadcasts 45 kW of power uniformly in all directions. Randomized VariablesP = 45 kW d = 29 km  Part (a)  Assuming all of the radio waves that strike the ground are completely absorbed, and that there is no absorption by the atmosphere or other objects, what is the intensity 29 km away?   Part (b)  What is the maximum electric field strength at this distance, in N/C?

University Physics Volume 2
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Chapter16: Electromagnetic Waves
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Problem 51P: A radio station broadcasts at a frequency of 760 kHz. At a receiver some distance from the antenna,...
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 An AM radio transmitter broadcasts 45 kW of power uniformly in all directions.

Randomized VariablesP = 45 kW
d = 29 km

 Part (a)  Assuming all of the radio waves that strike the ground are completely absorbed, and that there is no absorption by the atmosphere or other objects, what is the intensity 29 km away? 

 Part (b)  What is the maximum electric field strength at this distance, in N/C? 

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