Tuesday
April 28, 2015

Homework Help: physics

Posted by taryn on Friday, April 5, 2013 at 11:15pm.

A 2.10 m diameter university communications satellite dish receives TV signals that have a maximum electric field strength (for one channel) of 7.90 V/m.


(a) What is the intensity of this wave?
W/m2?
(b) What is the power received by the antenna?
W?
(c) If the orbiting satellite broadcasts uniformly over an area of 1.50 1013 m2 (a large fraction of North America), how much power does it radiate?
W?

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