What is the Brewster's angle for light traveling in vacuum and ...

[tnt_battle]

What is the Brewster's angle for light traveling in vacuum and reflecting off a piece of glass of index of refraction 1.52?
 
  A) 48.9
  B) 33.3
  C) 48.1
  D) 56.7
  E) 41.1

Question 2

A figure skater rotating at 5.00 rad/s with arms extended has a moment of inertia of 2.25 kgm2. If the arms are pulled in so the moment of inertia decreases to 1.80 kgm2, what is the final angular speed?
 
  A) 2.25 rad/s
  B) 4.60 rad/s
  C) 6.25 rad/s
  D) 1.76 rad/s
  E) 0.81 rad/s

[mohan]

Answer to Question 1

D

Answer to Question 2

C

[tnt_battle]

Thank you!

[mohan]

Always glad to help...