Here is the question: A satellite in geostationary orbit is used to transmit dat

Question

Here is the question:


A satellite in geostationary orbit is used to transmit datavia electromagnetic radiation. The satellite is at a height of35,000 km above the surface of the earth, and we assume it has anisotropic power output of 1 kW (although, in practice, satelliteantennas transmit signals that are less powerful but moredirectional).



Reception devices pick up the variation in the electric fieldvector of the electromagnetic wave sent out by the satellite. Giventhe satellite specifications listed in the problem introduction,what is the amplitude of the electric field vector of the satellite broadcastas measured at the surface of the earth? Use for the permittivity of space and for the speed of light.



Express the amplitude of the electric field vector inmicrovolts per meter to three significant figures.



Any help is appreciated!!!

Explanation / Answer

. Relevant equations
I believe I should use
ac = (42r) / T2

Converted:
T= 24 hr = 86400s
r = 35000 km = 35 000 000 m = 3.50 x 107 m

3. The attempt at a solution
I plugged in the values:
ac = (4235 000 000) / 864002

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