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Chaisson and McMillan - Astronomy: A Beg. Guide 4/ (Homework)

James Finch

Astronomy, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score: 1/8

Due: Saturday, October 16, 2010 08:30 EDT

About this Assignment

Question
Points
1 2 3 4 5
0/1 1 0/2 0/3 0/1
Total
1/8

Description

Here are some textbook and testbank questions from Astronomy: A Beginners Guide to the Universe 4/e by Eric Chaisson and Steve McMillan published by Addison Wesley. Click here for a list of all of the questions coded in WebAssign.


Instructions

This assignment will show you the four types of questions available for Astronomy: A Beginners Guide, Self-Test (ST), Review and Discussion (RD), Problems (P), and Test Bank (TB).

This demo assignment allows many submissions and makes the answer key available after the first submission so you can see the correct answers. (Typically, the answer key is posted after the due date!)



1. –/1 points Notes Question: BG4 4.ST.10.
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 
When a meteoroid, asteroid, or comet fragment enters Earth's atmosphere, you see a
Answer is not case sensitive.
.

2. 1/1 points All Submissions Notes Question: BG4 4.RD.13.
Question part
Points
Submissions
1
1
1/50
Total
1/1
 
Where did Earth's water come from?


3. –/2 points Notes Question: BG4 4.P.02.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
An asteroid (Figure 4.5) has a perihelion distance of 0.16 A.U. and an orbital eccentricity of 0.80. What is its semi-major axis and aphelion distance from the Sun?
semi-major axis
Enter a number.
 A.U.
aphelion distance from the Sun
Enter a number.
 A.U.


Figure 4.5



4. –/3 points Notes Question: BG4 4.P.06.
Question part
Points
Submissions
1 2 3
0/1 0/1 0/1
0/50 0/50 0/50
Total
0/3
 
The orbital angular momentum of a planet in a circular orbit is the product of mass times orbital speed times distance from the Sun.
(a) Compare the orbital angular momenta of Saturn, Uranus, and Earth.
comparing Saturn to Earth
Enter a number.
 angular momentum of Earth
comparing Uranus to Earth
Enter a number.
 angular momentum of Earth
(b) What is the orbital angular momentum of an Oort-Cloud comet of mass 1013 kg, moving in a circular orbit 50,000 A.U. from the Sun?
Enter a number.
 kgm/s2


5. –/1 points Notes Question: BG4 4.TB.108.
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 
The asteroid belt is located between the orbits of what two planets?



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