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Author Question: A light ray in air enters and passes through a block of glass. What can be stated with regard to its ... (Read 92 times)

jrubin

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on: Jul 28, 2018
A light ray in air enters and passes through a block of glass. What can be stated with regard to its speed after it emerges from the block?
 a. Speed is less than when in glass.
  b. Speed is same as that before it entered glass.
  c. Speed is same as that in glass.
  d. Speed is less than before it entered glass.

Question 2

How much heat energy is required to vaporize a 1.0-g ice cube at 0C? The heat of fusion of ice is 80 cal/g. The heat of vaporization of water is 540 cal/g, and cwater = 1.00 cal/gC.
 a. 620 cal
  c. 820 cal
  b. 720 cal
  d. 1 kcal


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Amiracle

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

B

Answer to Question 2

B


jrubin

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Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


Amiracle

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Reply #3 on: Jul 28, 2018
Great! Please up vote :D


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