EBK THE COSMIC PERSPECTIVE
9th Edition
ISBN: 9780135161760
Author: Voit
Publisher: VST
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Chapter 12, Problem 51EAP
Comet Temperatures. Find the “no greenhouse” temperatures for a comet at distances from the Sun of 50,000 AU (in the Oort cloud), 3 AU, and 1 AU (see Mathematical Insight 10.1). Assume that the comet reflects 3% of the incoming sunlight. At which location will the temperature be high enough for water ice to vaporize (about 150 K)? How do your results explain comet anatomy?
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There is one part to this question. I need to know the days. Thank you!
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You observe a comet 0.32 AU from Earth with a tail that is 1.7 degrees long. How long is the tail in AU?
How long is the tail in kilometers?
How many times could the U.S. fit along the length of the tail? (The width of the U.S. is 4,313 km.)
Part 1 of 3
You observe a comet 0.32 AU from Earth with a tail that is 1.7 degrees long. How long is the tail in AU?
We use the small angle formula to calculate the length of the tail in AU.
arc seconds d
Ꮎ
2.06 x 105
D
Solving for the linear distance gives:
dAU = DAU
dAU =
=
AU
arc seconds
2.06 x 105
1
Chapter 12 Solutions
EBK THE COSMIC PERSPECTIVE
Ch. 12 - Prob. 1VSCCh. 12 - Use the following questions to check your...Ch. 12 - Use the following questions to check your...Ch. 12 - Prob. 4VSCCh. 12 - Use the following questions to check your...Ch. 12 - 1. Briefly define asteroid. comet, dwarf planet,...Ch. 12 - Briefly describe asteroid sizes, shapes, masses,...Ch. 12 - 3. Distinguish between primitive meteorites and...Ch. 12 - 4. What do meteorites and spacecraft observations...Ch. 12 - Prob. 5EAP
Ch. 12 - Prob. 6EAPCh. 12 - Prob. 7EAPCh. 12 - How do we know the Kuiper belt and Oort cloud...Ch. 12 - Prob. 9EAPCh. 12 - Prob. 10EAPCh. 12 - Prob. 11EAPCh. 12 - Briefly describe the evidence suggesting that an...Ch. 12 - Prob. 13EAPCh. 12 - Prob. 14EAPCh. 12 - Prob. 15EAPCh. 12 - Prob. 16EAPCh. 12 - Prob. 17EAPCh. 12 - Prob. 18EAPCh. 12 - Prob. 19EAPCh. 12 - Prob. 20EAPCh. 12 - Prob. 21EAPCh. 12 - Prob. 22EAPCh. 12 - Prob. 23EAPCh. 12 - Prob. 24EAPCh. 12 - Choose the best answer to each of the following....Ch. 12 - Choose the best answer to each of the following....Ch. 12 - Choose the best answer to each of the following....Ch. 12 - Choose the best answer to each of the following....Ch. 12 - Choose the best answer to each of the following....Ch. 12 - Choose the best answer to each of the following....Ch. 12 - Choose the best answer to each of the following....Ch. 12 - Choose the best answer to each of the following....Ch. 12 - Choose the best answer to each of the following....Ch. 12 - Choose the best answer to each of the following....Ch. 12 - The Role of Jupiter. Suppose that Jupiter had...Ch. 12 - Prob. 41EAPCh. 12 - Prob. 42EAPCh. 12 - Comet Tails. Describe in your own words why comets...Ch. 12 - Prob. 44EAPCh. 12 - Adding Up Asteroids. It’s estimated that there are...Ch. 12 - Impact Energies. A relatively small impact crater...Ch. 12 - The “Near Miss” of Toutatis. The 5-kilometer...Ch. 12 - Prob. 50EAPCh. 12 - Comet Temperatures. Find the “no greenhouse”...Ch. 12 - Comet Dust Accumulation. A few hundred tons of...
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- A new Terrestrial planet has been discovered orbiting a nearby Sun-like star. Astronomers have obtained spectra of this planet and determined that the atmosphere is composed of roughly 99% CO2, and the remaining 1% is mostly N2 and is very thin compared to Earth's atmosphere. Briefly describe how the planet could have developed such an atmosphere.arrow_forwardA typical comet contains some 1013 kg of water ice. How many comets would have to strike Earth in order to account for the roughly 2×1021 kg of water presently found on our planet? (Hint: simple division) If this amount of water accumulated over a period of 500 million years, how frequently must Earth have been hit by comets during that time? (Hint: Calculate, on the average, how many comets hit the Earth per year during that time.)arrow_forwardIn the previous lab, we calculated the area in between Mars' and Jupiter's orbit to be ~1.6e18 km2. Since there are roughly 750,000 asteroids, how much area (in km2) is available for one asteroid? Use this calculation to argue whether you are likely (or not) to hit an asteroid while flying through the asteroid belt. (Hint: To answer the first part of the question, find the area per asteroid)arrow_forward
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