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, what average pressure does this wave exert on a totally reflecting surface? Pau = 2.10x10-11 Pa Submit Previous Answers Part B Correct At a home 4.00 km away from the antenna, what are the amplitudes of the electric and magnetic fields of the wave? Emaz. Bmaz 1.54,5.13×109 N/C,T Submit Previous Answers Part C Correct At a home 4.00 km away from the antenna, what is the average density of the energy this wave carries? Ο ΑΣΦ tha-3.77.10⁹ Submit Previous Answers Request Answer ? * Incorrect; Try Again; 4 attempts remaining J/m³ Part D For the energy density in part (c), what percentage is due to the electric field? 50.0 % Submit Previous Answers Part E Correct For the energy density in part (c), what percentage is due to the magnetic field? 50.0 %

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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, what average pressure does this wave exert on a totally reflecting surface?
Pau 2.10x10-11 Pa
Submit
Previous Answers
Part B
Correct
At a home 4.00 km away from the antenna, what are the amplitudes of the electric and magnetic fields of the wave?
Emaz. Bmaz 1.54,5.13×10-9 N/C,T
Submit
Previous Answers
Part C
Correct
At a home 4.00 km away from the antenna, what is the average density of the energy this wave carries?
Ο ΑΣΦ
?
that = 3.77.109
Submit Previous Answers Request Answer
* Incorrect; Try Again; 4 attempts remaining
Part D
J/m³
For the energy density in part (c), what percentage is due to the electric field?
50.0 %
Submit
Previous Answers
Part E
Correct
For the energy density in part (c), what percentage is due to the magnetic field?
50.0 %
Submit Previous Answers
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, what average pressure does this wave exert on a totally reflecting surface? Pau 2.10x10-11 Pa Submit Previous Answers Part B Correct At a home 4.00 km away from the antenna, what are the amplitudes of the electric and magnetic fields of the wave? Emaz. Bmaz 1.54,5.13×10-9 N/C,T Submit Previous Answers Part C Correct At a home 4.00 km away from the antenna, what is the average density of the energy this wave carries? Ο ΑΣΦ ? that = 3.77.109 Submit Previous Answers Request Answer * Incorrect; Try Again; 4 attempts remaining Part D J/m³ For the energy density in part (c), what percentage is due to the electric field? 50.0 % Submit Previous Answers Part E Correct For the energy density in part (c), what percentage is due to the magnetic field? 50.0 % Submit Previous Answers
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