× Didn't find what you were looking for? Ask a question
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 Astronomy
New Topic  
ladyapj ladyapj
wrote...
Go to Answer
Posts: 531
Rep: 0 0
6 years ago
The Moon's crust is thicker on the side of the Moon that faces the Earth.
 
  Indicate whether the statement is true or false

Question 2

In order to turn a star's proper motion into its space velocity, we must also know
 
  A) its mass and spectral type.
  B) its temperature and age.
  C) its distance and radial velocity.
  D) its distance and mass.
  E) its spectral type and period of rotation.

Question 3

What information do we know about the known exoplanets?
 
  A) estimates of orbits and masses
  B) complete composition
  C) precise masses
  D) All of the above
  E) None of the above

Question 4

Taking the total number of stars in the Milky Way and dividing by the age of the Milky Way is a way to estimate:
 
  A) the age of the stars in the Milky Way.
  B) the star formation rate in the Milky Way.
  C) the average age of a star in the Milky Way.
  D) the rate of formation of high mass stars in the Milky Way.
  E) the average age of a low mass main sequence star in the Milky Way.
Read 33 times
3 Replies
Replies
Answer verified by a subject expert
lizzynorrislizzynorris
wrote...
#1
Top Poster
Posts: 516
Rep: 0 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

ladyapj Author
wrote...
#2
6 years ago
Words can't even express my thanks
wrote...
#3
6 years ago
Pleasure is all mine
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1057 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 526
  
 608
  
 151
Your Opinion
Do you believe in global warming?
Votes: 419
Previous poll results: What's your favorite funny biology word?