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Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
22
Electromagnetic Waves
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22-1: B Produced by Changing E
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22-2: EM Waves
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22-3: Electromagnetic Spectrum
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22-4: Measuring the Speed of Light
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22-5: Energy in EM Wave
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22-6: Radiation Pressure
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22-7: Radio, TV
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Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 16
Q

How long would it take a message sent as radio waves from Earth to reach Mars when Mars is

  1. nearest Earth,
  2. farthest from Earth? Assume that Mars and Earth are in the same plane and that their orbits around the Sun are circles (Mars is ≈230×106 km\approx 230 \times 10^6 \textrm{ km} from the Sun).
A
  1. 300 s300 \textrm{ s}
  2. 1300 s1300 \textrm{ s}
Giancoli 7th Edition, Chapter 22, Problem 16 solution video poster
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