Top Posters
Since Sunday
w
3
w
3
e
3
3
r
3
g
2
2
b
2
M
2
V
2
f
2
c
2
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
A black hole is so named because
A)   no light or other electromagnetic radiation can escape from inside it.
B)   all of its electromagnetic radiation is gravitationally redshifted to the infrared, leaving no light in the optical region.
C)   it emits a perfect blackbody spectrum.
D)   it is colder than the rest of the universe; that is, its effective temperature is less than 3 K.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
Read 76 times
2 Replies
Replies
Answer verified by a subject expert
discovererdiscoverer
wrote...
#1
Top Poster
Posts: 1374
Rep: 30 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
  377 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 286
  
 733
  
 751
Your Opinion
What's your favorite coffee beverage?
Votes: 305
Previous poll results: Where do you get your textbooks?