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
New Topic  
killian killian
wrote...
Go to Answer
Silver Member
Posts: 6024
Rep: 33 0
9 years ago
What is a standard candle?
A) an object for which we are likely to know its true luminosity
B) an object for which we can easily measure its apparent brightness
C) a class of objects that we know all have exactly the same luminosity
D) any star for which we know its exact apparent brightness
E) a unit of luminosity used by astronomers
Read 333 times
2 Replies
Smiling Face with Open Mouth
Replies
Answer accepted by topic starter
padrepadre
wrote...
#1
Staff Member
Educator
Top Poster
Posts: 21608
Rep: 4541 17
9 years ago
Sign in or Sign up in seconds to unlock everything for free
1
Mastering in Nutritional Biology
Tralalalala Slight Smile

Related Topics

wrote...
#2
9 years ago
Thanks Padre
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1248 People Browsing
 128 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 234
  
 1526
  
 313