Top Posters
Since Sunday
z
4
n
4
t
4
k
3
x
3
r
3
m
3
j
3
c
3
l
3
e
3
s
2
Home Q & A Board Science-Related Homework Help Physics
New Topic  
doit_the_clown doit_the_clown
wrote...
Go to Answer
Posts: 1408
Rep: 0 0
7 years ago
What happens to the helium-rich core of a star after the core runs out of hydrogen?
A)   It cools down and contracts.   C)   It heats up and expands.
B)   It expands and cools down.   D)   It contracts and heats up.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
Read 128 times
1 Reply
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
Replies
Answer verified by a subject expert
hyponoticahyponotica
wrote...
#1
Top Poster
Posts: 1396
Rep: 28 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

doit_the_clown Author
wrote...

7 years ago
Thanks
Danivalda
wrote...

Yesterday
This calls for a celebration Person Raising Both Hands in Celebration
jamesbove
wrote...

2 hours ago
Correct Slight Smile TY
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  570 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 768
  
 328
  
 1018
Your Opinion
Which industry do you think artificial intelligence (AI) will impact the most?
Votes: 484
Previous poll results: Who's your favorite biologist?