Author Question: A galaxy's supermassive black hole represents about ____ for elliptical galaxies. a. half a ... (Read 67 times)

penza · **on:** Jul 27, 2018

A galaxy's supermassive black hole represents about ____ for elliptical galaxies.

a. half a percent of the mass of the disk
b. five percent of the mass of the central bulge
c. half a percent of the mass of the central bulge
d. five percent of the mass of the disk
e. half a percent of the dark matter in the corona

Question 2

Physicists and astronomers usually refer to the permitted orbits of an atom as the atom's _______________ levels.

Fill in the blank(s) with correct word