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Author Question: A thin laser beam traveling in air strikes the surface of a glass plate at 41.2 with the normal. In ... (Read 223 times)

newbem

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on: Jul 29, 2018
A thin laser beam traveling in air strikes the surface of a glass plate at 41.2 with the normal. In the plate, this beam makes an angle of 22.4 with the normal. What is the speed of light in this glass?(c = 3.0  108 m/s)
 
  What will be an ideal response?

Question 2

The water flowing over Niagara Falls drops a distance of 50 m.
 
  If all the gravitational potential energy of the system water-Earth is converted to thermal energy, by what temperature does the water rise? The specific heat of water is 4186 J/kg  K. A) 0.10 C
  B) 0.12 C
  C) 0.37 C
  D) 0.42 C


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ansleighelindsey

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

1.74  108 m/s

Answer to Question 2

B


newbem

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Reply #2 on: Jul 29, 2018
Thanks


ansleighelindsey

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Reply #3 on: Jul 29, 2018
Welcome :)


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