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Schneider and Arny - Pathways to Astronomy 1/e (Homework)

James Finch

Astronomy, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 2 / 9

Due : Monday, January 28, 2030 00:00 EST

Last Saved : n/a Saving...  ()

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Question
Points
1 2 3 4 5
1/1 1/1 –/1 –/2 –/4
Total
2/9 (22.2%)

  • Instructions

    Here are some textbook questions from Pathways to Astronomy by Stephen Schneider and Thomas Arny published by McGraw-Hill. Click here for a list of all of the questions coded in WebAssign. 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!)

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1. 1/1 points  |  Previous Answers SAstro1 11.TY.03. My Notes
Question Part
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1/1
 
Occam's razor is used to
     Correct: Your answer is correct.
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2. 1/1 points  |  Previous Answers SAstro1 15.TY.02. My Notes
Question Part
Points
Submissions Used
1
1/1
1/50
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1/1
 
Which of the following cases does not describe an acceleration?
     Correct: Your answer is correct.
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3. –/1 points SAstro1 18.P.03. My Notes
Question Part
Points
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–/1
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–/1
 
What is the escape velocity from a galaxy at a radius of 35,000 ly if the mass of the galaxy is 1012 times the Sun's mass?
m/s
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4. –/2 points SAstro1 46.P.01. My Notes
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1 2
–/1 –/1
0/50 0/50
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–/2
 
Metis, Amalthea, and Thebe orbit at distances of 127,960, 181,300, and 221,900 km from Jupiter's center. Calculate how many times longer Amalthea and Thebe take to orbit Jupiter than Metis. (Hint: You do not need to know Jupiter's mass to calculate the relative times.)
Amalthea times
Thebe times
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5. –/4 points SAstro1 79.P.03. My Notes
Question Part
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1 2 3 4
–/1 –/1 –/1 –/1
0/50 0/50 0/50 0/50
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–/4
 
What wavelength would visible light (400-700 nm) have if it were seen from a galaxy formed just 800 million years after the Big Bang? (Refer to Table 79.1)
nm to nm
What if it came from matter when the universe was just 400,000 years old?
nm to nm

Table 79.1
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