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Koupelis - In Quest of the Universe 6/e (Homework)

Jan Jones

Jones and Bartlett, Fall 2011

Instructor: J. Bartlett

Current Score : 0 / 19

Due : Saturday, October 22, 2011 10:00 PM EDT

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0/5 0/4 0/1 0/2 0/1 0/1 0/4 0/1
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  • Description

    Here are some textbook questions from In Quest of the Universe 6/e by Theo Koupelis published by Jones and Bartlett Publishers. Click here for a list of all of the questions coded in WebAssign.

  • Instructions

    This demo assignment allows many submissions and allows you to try another version of the same question for practice.

Assignment Submission

For this assignment, the number of submissions for each answer box is counted independently. The number of submissions remaining changes only if you submit a new or changed answer.

1. –/5 points Notes Question: KoupUniverse6 1.C.004.
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Using scientific notation and data found in the appendices, answer the following questions.
(a) How many times greater is the Sun's radius than the Earth's?
times

(b) The stars Rigel and Betelgeuse are both in the constellation Orion. Are they at the same distance from us?
    

What does your answer suggest about the constellations?


(c) How long does it take light to travel from Rigel to Earth?
years

What does that tell you about the current state of this star?

Your work in question(s) will also be submitted or saved.
2. –/4 points Notes Question: KoupUniverse6 1.Q.007.
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Click on the position of the vernal equinox on the figure below.


Click on the position of the autumnal equinox on the figure below.


Click on the position of the summer solstice on the figure below.


Click on the position of the winter solstice on the figure below.

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3. –/1 points Notes Question: KoupUniverse6 1.Q.013.
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If you see the Moon high overhead shortly before sunrise, about what phase is it in?
    

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4. –/2 points Notes Question: KoupUniverse6 2.C.002.
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0/2
 
Mars' semimajor axis is 1.5 AU. What are the smallest and largest distances possible between Earth and Mars?
smallest AU
largest AU

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5. –/1 points Notes Question: KoupUniverse6 2.C.008.
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Suppose you live on planet X. One day the Sun is directly over a place 450 km to your south, while at your position the Sun's direction is 7 degrees off vertical. What is the radius of planet X?
km
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6. –/1 points Notes Question: KoupUniverse6 4.C.009.
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Matter falling toward a black hole gets compressed and heated to about 106 K. In what part of the electromagnetic spectrum would you search for black holes?
    

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7. –/4 points Notes Question: KoupUniverse6 5.C.001.
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Suppose you have lenses of the following focal lengths: 32, 9, and 5 centimeters. If you wish to construct a telescope of maximum magnification, which two lenses would you use?


Which would be the objective and which the eyepiece?
objective
eyepiece

What magnification would this telescope produce?
times
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8. –/1 points Notes Question: KoupUniverse6 6.C.002.
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At what distance could we see clearly an asteroid of diameter 230 kilometers if the best telescope on Earth could give us a resolution of 0.25''?
km
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