Author Question: Stars A and B are both black holes but have different masses. If the mass of star A is twice as much ... (Read 59 times)

jilianpiloj · **on:** Jul 29, 2018

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