An AM radio transmitter broadcasts 60.7 kW of power uniformly in all directions.
(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, find the intensity 30.3 kilometer away? (Hint: Half the power will be spread over the area of a hemisphere). Find the relationship between power and intensity? Determine the shape of the area of the projected light?
=_____ W/m2
(b) Find the maximum electric field strength at this distance?
=_____V/m