A light ray in air enters and passes through a block of glass. ...

[jrubin]

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

[Amiracle]

Answer to Question 1

B

Answer to Question 2

B

[jrubin]

Both answers were spot on, thank you once again

[Amiracle]

Great! Please up vote