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Author Question: An ultraviolet light wave has a wavelength of 300 nm and speed of 1.8 108 m/s through a transparent ... (Read 117 times)

gonzo233

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on: Jul 28, 2018
An ultraviolet light wave has a wavelength of 300 nm and speed of 1.8  108 m/s through a transparent medium. What is the frequency of this wave in the medium? (1 nm = 10-9 m and c = 3.00  108 m/s)
 a. 7.0  1014 Hz
  c. 6.3  102 Hz
  b. 6.0  1014 Hz
  d. 10  1014 Hz

Question 2

An airplane flying with a constant speed flies from a warm air mass into a cold air mass. The Mach number (the ratio of the speed of the airplane to the speed of sound) will:
 a. increase.
  c. stay the same.
  b. decrease.
  d. become unstable.


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zogaridan

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Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

A


gonzo233

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Reply 2 on: Jul 28, 2018
Excellent

atrochim

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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