Top Posters
Since Sunday
t
7
m
6
k
6
F
5
j
5
t
5
j
5
G
5
f
5
a
5
d
5
c
5
Home Q & A Board Science-Related Homework Help Physics
New Topic  
staedtler staedtler
wrote...
Go to Answer
Posts: 2716
Rep: 0 0
7 years ago
The source of a protostar's heat is
A)   gravitational energy released as the protostar expands.
B)   nuclear reactions converting helium to carbon and oxygen in its core.
C)   gravitational energy released as the star contracts.
D)   nuclear reactions converting hydrogen into helium in its core.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
Read 142 times
2 Replies
Replies
Answer verified by a subject expert
papachulopapachulo
wrote...
#1
Top Poster
Posts: 1302
Rep: 29 0
7 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

staedtler Author
wrote...
#2
7 years ago
I really appreciate your help!
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  971 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 1517
  
 659
  
 769
Your Opinion
What's your favorite coffee beverage?
Votes: 299
Previous poll results: What's your favorite funny biology word?