A light ray in water passes into air. The angle of incidence in the water is 40. What is the angle ...

A light ray in water passes into air. The angle of incidence in the water is 40. What is the angle of refraction in air if the index of refraction of water is 1.33?
 
  A) 59
  B) 0.59
  C) 40
  D) 1.33
  E) 29

Question 2

The East African rift zone was formed by
 
  A) two pieces of continental crust separating
  B) two pieces of oceanic crust colliding
  C) two pieces of continental crust colliding
  D) pieces of oceanic and continental crust colliding

Question 3

Consider two uniform solid spheres where both have the same diameter, but one has twice the mass of the other. The ratio of the larger moment of inertia to that of the smaller moment of inertia is
 
  A) 2.
  B) 10.
  C) 4.
  D) 8.
  E) 6.

Question 4

What would be the deBroglie wavelength for 1 gram moving at escape speed 25,000. mph?
 
  What will be an ideal response?