A parabolic satellite dish is somewhat bowl-shaped, but the incoming signal is captured across its circular cross-section. A parabolic satellite dish with radius, R = 1.5 m, picks up a TV signal with a peak electric field strength of 74 mV/m. (a) What is the average intensity of the incoming signal? W/m² (b) What is the average (total) power received by the satellite dish? W

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A parabolic satellite dish is somewhat bowl-shaped, but the
incoming signal is captured across its circular cross-section.
A parabolic satellite dish with radius, R = 1.5 m, picks up a TV
signal with a peak electric field strength of 74 mV/m.
(a) What is the average intensity of the incoming signal?
W/m²
(b) What is the average (total) power received by the satellite dish?
W
R
(c) What is the average output power of the orbiting transmitter if it broadcasts uniformly over an area of 1.5 x 10¹3 m²?
MW
Transcribed Image Text:A parabolic satellite dish is somewhat bowl-shaped, but the incoming signal is captured across its circular cross-section. A parabolic satellite dish with radius, R = 1.5 m, picks up a TV signal with a peak electric field strength of 74 mV/m. (a) What is the average intensity of the incoming signal? W/m² (b) What is the average (total) power received by the satellite dish? W R (c) What is the average output power of the orbiting transmitter if it broadcasts uniformly over an area of 1.5 x 10¹3 m²? MW
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