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Author Question: The speed for a low circular orbit about the Earth is about A) 1.7 104 km/s. B) 7.6 km/s. C) ... (Read 102 times)

fagboi

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on: Jul 27, 2018
The speed for a low circular orbit about the Earth is about
 
  A) 1.7  104 km/s.
  B) 7.6 km/s.
  C) 2.1 km/s.
  D) 2.5  104 km/s.
  E) 17. km/s.

Question 2

Compared to the wavelength of a 400 Hz sound, the wavelength of a 200 Hz sound in air is
 
  A) four times as long.
  B) twice as long.
  C) the same.
  D) one-half as long.
  E) none of the above


kalskdjl1212

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Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

B


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fagboi

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Reply #2 on: Jul 27, 2018
Thanks


kalskdjl1212

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Reply #3 on: Jul 27, 2018
Welcome :)


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