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Author Question: Which of the following cannot travel in a vacuum? A) a light wave B) a sound wave C) a radio ... (Read 40 times)

123654777

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on: Jul 29, 2018
Which of the following cannot travel in a vacuum?
 
  A) a light wave
  B) a sound wave
  C) a radio wave
  D) all can
  E) none can

Question 2

Compared to ultraviolet waves, the wavelength of infrared waves is
 
  A) shorter.
  B) the same.
  C) longer.


Amiracle

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: C


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123654777

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Reply #2 on: Jul 29, 2018
TY


Amiracle

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Reply #3 on: Jul 29, 2018
You're welcome


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