× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
Home Q & A Board Science-Related Homework Help Physics Astronomy
New Topic  
kkoonge kkoonge
wrote...
Go to Answer
Posts: 480
Rep: 0 0
6 years ago
The energy from an AGN is produced by
 
  a. the collision of two spiral galaxies.
  b. the collision of two elliptical galaxies.
  c. the collision of two radio jets.
  d. matter flowing into a supermassive black hole.
  e. supernovae.

Question 2

A Sun-like star will experience a helium flash in the core if
 
  a. it is less massive than about 3 solar masses.
  b. it has become a red giant star.
  c. it has formed a helium core.
  d. the material in the core has gradually become degenerate.
  e. All of the other choices are correct.

Question 3

The letters AGN stand for
 
  a. three spectral types of stars.
  b. active planet.
  c. active star.
  d. active galaxy nucleus.
  e. None of the other choices are correct.
Read 84 times
2 Replies
Replies
Answer verified by a subject expert
knappstr95knappstr95
wrote...
#1
Top Poster
Posts: 576
Rep: 3 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

kkoonge Author
wrote...
#2
6 years ago
Thank you so much for providing this
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1360 People Browsing
 108 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 150
  
 219
  
 200
Your Opinion
Do you believe in global warming?
Votes: 370
Previous poll results: Should Ph.D.'s be addressed as doctors?