Essential Cosmic Perspective, The, Books a la Carte Edition & Modified MasteringAstronomy with Pearson eText -- ValuePack Access Card -- for The Essential Cosmic Perspective Package
1st Edition
ISBN: 9780133879216
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 8EAP
Use the cosmic calendar to describe how the human race fits into the scale of time.
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It is important to have an idea about the distances between and relative sizes of celestial objects in the
solar system. In Part 1 we will pretend to shrink the solar system until its center piece, the Sun, is 67.3 cm
in diameter. This will represent the Sun which is 1,390,000 km in diameter. The scale of our model is thus:
67.3 cm
= 4.84 x 10-5 cm
km
Scale
1, 390, 000 km
To find the size or distance between objects in centimeters for the model, simply multiply the actual size
or distance in kilometers by the scale factor above.
1. Fill in following table:
Quantity
Actual Distance (km) Model Distance (cm)
Diameter of Sun
1,390,000
Diameter of Earth
12,760
Diameter of Moon
3,480
Distance Between Earth and Sun
1.5 x 108
Distance Between Earth and Moon
384,000
Distance to Proxima Centauri
3.97 x 1013
Suppose the Sun were somehow replaced by a star with five times as much mass. How long would the Earth year last in this last case? (hint: Newton’s version of Kepler’s 3rd Law)
Oxygen Atoms in People. Figure 5.7 shows that oxygen makes up about 65% of the mass of a human being. A single oxygen atom has a mass of 2.66 × 10−26 kg. (a) Use this fact to estimate the number of oxygen atoms in your body. (Hint: If you know your weight in pounds, you can convert to kilograms by dividing by 2.2.) (b) Compare your answer to the number of stars in the observable universe (which is roughly 1022).
Chapter 1 Solutions
Essential Cosmic Perspective, The, Books a la Carte Edition & Modified MasteringAstronomy with Pearson eText -- ValuePack Access Card -- for The Essential Cosmic Perspective Package
Ch. 1 - Prob. 1VSCCh. 1 - Prob. 2VSCCh. 1 - About how far away from Earth would the Sun be...Ch. 1 - Prob. 4VSCCh. 1 - Prob. 1EAPCh. 1 - Define astronomical unit and light-year.Ch. 1 - Explain the statement The farther away we look in...Ch. 1 - Prob. 4EAPCh. 1 - Prob. 5EAPCh. 1 - What do we mean when we say that the universe is...
Ch. 1 - In what sense are we “star stuff”?Ch. 1 - Use the cosmic calendar to describe how the human...Ch. 1 - Briefly explain Earth’s daily rotation and annual...Ch. 1 - Prob. 10EAPCh. 1 - Prob. 11EAPCh. 1 - Prob. 12EAPCh. 1 - Prob. 13EAPCh. 1 - Prob. 14EAPCh. 1 - Decide whether the statement makes sense (or is...Ch. 1 - Prob. 16EAPCh. 1 - Prob. 17EAPCh. 1 - Prob. 18EAPCh. 1 - Decide whether the statement makes sense (or is...Ch. 1 - Prob. 20EAPCh. 1 - Decide whether the statement makes sense (or is...Ch. 1 - Prob. 22EAPCh. 1 - Prob. 23EAPCh. 1 - An astronomical unit is (a) any planet’s average...Ch. 1 - The star Betelgeuse s about 600 light-years away....Ch. 1 - Prob. 26EAPCh. 1 - Prob. 27EAPCh. 1 - Prob. 28EAPCh. 1 - Prob. 29EAPCh. 1 - Prob. 30EAPCh. 1 - Prob. 31EAPCh. 1 - Prob. 32EAPCh. 1 - Prob. 33EAPCh. 1 - Thinking About Scale. One key to success m science...Ch. 1 - Prob. 35EAPCh. 1 - Prob. 36EAPCh. 1 - Prob. 37EAPCh. 1 - Prob. 38EAPCh. 1 - Prob. 39EAPCh. 1 - Prob. 40EAPCh. 1 - Prob. 41EAPCh. 1 - Moonlight and Sunlight. How long does it take...Ch. 1 - Prob. 43EAPCh. 1 - Driving Trips. Imagine that you could drive your...Ch. 1 - Prob. 45EAPCh. 1 - 48. Vast Orbs. Dutch astronomer Christiaan Huygens...Ch. 1 - Prob. 47EAPCh. 1 - Prob. 48EAPCh. 1 - Prob. 49EAPCh. 1 - Prob. 50EAPCh. 1 - Prob. 51EAP
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