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Author Question: An 800-kHz radio signal is detected at a point 4.5 km distant from a transmitter tower. The ... (Read 87 times)

cartlidgeashley

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An 800-kHz radio signal is detected at a point 4.5 km distant from a transmitter tower.
 
  The electric field amplitude of the signal at that point is 0.63 V/m. Assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed. What is the magnetic field amplitude of the signal at that point? (c = 3.0 x 108 m/s, 0 = 4  10-7 T  m/A, 0 = 8.85  10-12 C2/N  m2)
  A) 2.9 nT B) 1.7 nT C) 1.3 nT D) 2.1 nT E) 2.5 nT

Question 2

By what primary heat transfer mechanism does the sun warm the earth?
 
  A) convection
  B) conduction
  C) radiation
  D) All of the above processes are equally important in combination.



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bhavsar

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Answer to Question 1

D

Answer to Question 2

C




cartlidgeashley

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Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review


frankwu0507

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Reply 3 on: Yesterday
Wow, this really help

 

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