The magnetic field component of the electromagnetic wave is 15.0 ...

[wenmo]

The magnetic field component of the electromagnetic wave is 15.0 T. What is the magnetic energy density of the wave?
 
  A)
 
  2.26  10-4 J/m3
  B)
 
  8.95  10-5 J/m2
  C)
 
  1.79  10-4 J/m3
  D)
 
  4.47  10-4 J/m2
  E)
 
  9.72  10-5 J/m3

Question 2

Suppose a solid sphere of mass M and radius R rolls without slipping down an inclined plane starting from rest. The angular velocity of the sphere at the bottom of the incline depends on
 
  A)
 
  the mass of the sphere.
 
  B)
 
  the radius of the sphere.
  C)
 
  both the mass and the radius of the sphere.
 
  D)
 
  neither the mass nor the radius of the sphere.

[thall411]

Answer to Question 1

C

Answer to Question 2

B