Public television station KQED in San Francisco broadcasts a sinusoidal radio signal at a power of 316 kW. Assume that the wave spreads out uniformly into a hemisphere above the ground. At a home 4.00 km away from the antenna, (a) what average pressure does this wave exert on a totally reflecting surface? 2.10 x 10^-11 Pa (b) what are the amplitudes of the electric and magnetic fields of the wave? [ Select ] Use: c = 3 x 108 m/s 8.85 x 10-12 C²/Nm²
Public television station KQED in San Francisco broadcasts a sinusoidal radio signal at a power of 316 kW. Assume that the wave spreads out uniformly into a hemisphere above the ground. At a home 4.00 km away from the antenna, (a) what average pressure does this wave exert on a totally reflecting surface? 2.10 x 10^-11 Pa (b) what are the amplitudes of the electric and magnetic fields of the wave? [ Select ] Use: c = 3 x 108 m/s 8.85 x 10-12 C²/Nm²
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter34: Maxwell’s Equations And Electromagnetic Waves
Section: Chapter Questions
Problem 32PQ
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solve for letter b, options are:
a. 1.93 N/C and 6.43 x 10^-9 T
b. 1.54 N/C and 5.13 x 10^-9 T
c. 1.09 N/C and 3.63 x 10^-9 T
d. 2.18 N/C and 7.25 x 10^-9 T
![Public television station KQED in San Francisco broadcasts a sinusoidal radio
signal at a power of 316 kW. Assume that the wave spreads out uniformly into a
hemisphere above the ground. At a home 4.00 km away from the antenna,
(a) what average pressure does this wave exert on a totally reflecting surface?
2.10 х 10^-11 Ра
(b) what are the amplitudes of the electric and magnetic fields of the wave?
[
[ Select ]
Use:
c = 3 x 108 m/s
= 8.85 x 10¬12 C²/Nm²
E. =](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F19791694-e59d-4c6c-b5ac-b3de09ff8fca%2F97eaf045-8422-479e-b441-ae2cdec8d834%2Ft5fy844_processed.png&w=3840&q=75)
Transcribed Image Text:Public television station KQED in San Francisco broadcasts a sinusoidal radio
signal at a power of 316 kW. Assume that the wave spreads out uniformly into a
hemisphere above the ground. At a home 4.00 km away from the antenna,
(a) what average pressure does this wave exert on a totally reflecting surface?
2.10 х 10^-11 Ра
(b) what are the amplitudes of the electric and magnetic fields of the wave?
[
[ Select ]
Use:
c = 3 x 108 m/s
= 8.85 x 10¬12 C²/Nm²
E. =
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