Top Posters
Since Sunday
w
5
a
3
j
2
a
2
t
2
u
2
r
2
j
2
j
2
l
2
d
2
y
2
Home Q & A Board Science-Related Homework Help Physics
New Topic  
Tsync Tsync
wrote...
Go to Answer
Posts: 3450
Rep: 8 0
8 years ago
Which of these is NOT a source of the shock waves that lead to protostars?
A) expanding Herbig-Haro objects
B) violent supernovae explosions
C) radiation from the OB stars in emission nebulae
D) expanding planetary nebula shells
E) collisions between galaxies
Textbook 
Astronomy Today

Astronomy Today


Edition: 8th
Authors:
Read 253 times
3 Replies
Minoring in physics
Replies
Answer verified by a subject expert
RatatouilleRatatouille
wrote...
#1
Top Poster
Posts: 3710
Rep: 56 0
8 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

Tsync Author
wrote...
#2
8 years ago
This astronomy class is killing me, thanks for chiming in and answering
Minoring in physics
wrote...
#3
8 years ago
Slight Smile
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1039 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 428
  
 325
  
 5792
Your Opinion
What's your favorite math subject?
Votes: 559
Previous poll results: How often do you eat-out per week?