Stars A and B are both black holes but have different masses. If ...

[jilianpiloj]

Stars A and B are both black holes but have different masses. If the mass of star A is twice as much as the mass of star B, the average density of star A, compared to the average density of star B will be
 
  A) the same.
  B) four times as much.
  C) one-fourth as much.
  D) half as much.
  E) twice as much.

Question 2

The maximum magnetic energy density of a sinusoidal electromagnetic wave is 8.95  10-5 J/m3. What is the amplitude of the magnetic field component of this wave?
 
  (c = 3.00  108 m/s, 0 = 4  10-7 T  m/A, 0 = 8.85  10-12 C2/N  m2 )
  A) 12.0 T B) 16.0 T C) 15.0 T D) 14.0 T E) 13.0 T

[Pswine]

Answer to Question 1

C

Answer to Question 2

C

[jilianpiloj]

TYSM

[tranoy]

Excellent