Assume (unrealistically) that a TV station acts as a point source broadcasting isotropically at 1.0 MW.What is the intensity of the transmitted signal reaching Proxima Centauri, the star nearest our solar system, 4.3 ly away? (An alien civilization at that distance might be able to watch X Files.) A light-year (ly) is the distance light travels in one year.
Assume (unrealistically) that a TV station acts as a point source broadcasting isotropically at 1.0 MW.What is the intensity of the transmitted signal reaching Proxima Centauri, the star nearest our solar system, 4.3 ly away? (An alien civilization at that distance might be able to watch X Files.) A light-year (ly) is the distance light travels in one year.
Chapter16: Electromagnetic Waves
Section: Chapter Questions
Problem 98AP: A radio station broadcasts its radio waves with a power of 50,000 W. What would be the intensity of...
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Assume (unrealistically) that a TV station acts as a point
source broadcasting isotropically at 1.0 MW.What is the intensity
of the transmitted signal reaching Proxima Centauri, the star nearest
our solar system, 4.3 ly away? (An alien civilization at that distance
might be able to watch X Files.) A light-year (ly) is the distance
light travels in one year.
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