Top Posters
Since Sunday
c
6
r
4
c
3
m
3
h
3
1
3
n
3
s
3
d
3
c
3
a
3
r
3
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
How do we measure the mass of an extrasolar planet?
A)   Using Newton's law of gravity, using its measured distance from the star and its gravitational pull on the star
B)   We can't make any firm estimate of the mass of an extrasolar planet with present technology.
C)   Using spectra to measure the planet's temperature and photometry to measure its brightness
D)   By measuring the planet's angular diameter and hence its size, and using spectra to find its composition and hence density
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
Read 103 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
Just got PERFECT on my quiz
Goku935
wrote...

Yesterday
Thank you, thank you, thank you!
Ifekwunigwe
wrote...

2 hours ago
Good timing, thanks!
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1513 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 174
  
 115
  
 673
Your Opinion
Which industry do you think artificial intelligence (AI) will impact the most?
Votes: 484
Previous poll results: Which 'study break' activity do you find most distracting?