Author Question: A billion solar mass black hole has a radius of only: A) one solar diameter. B) 20 A.U. C) 400 ... (Read 73 times)

bclement10 · **on:** Jul 27, 2018

A billion solar mass black hole has a radius of only:

A) one solar diameter.
B) 20 A.U.
C) 400 A.U.
D) 3 parsecs.
E) 20 parsecs.

Question 2

Nearly all the elements found in nature were formed inside stars, EXCEPT for:

A) carbon and silicon.
B) hydrogen and helium.
C) helium and carbon.
D) silver and technetium.
E) uranium and radium.