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A communication satellite in geosynchronous orbit remains above a single point on the Earth's equator as the planet rotates on its axis.
(a) Calculate the radius of its orbit.
m
(b) The satellite relays a radio signal from a transmitter near the North Pole to a receiver, also near the North Pole. Traveling at the speed of light, how long is the radio wave in transit?
s
Evaluate the electrostatic energy of two opposite charges
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