Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 9, Problem 42QAP
To determine
The size of a cubic volume of comet tail material.
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The mass of an average comet's nucleus is about 1.0 ✕ 1014 kg. If the Oort cloud contains 2.0 ✕ 1011 comet nuclei, what is the mass of the cloud in units of Earth masses? (Note: Earth's mass is 5.97 ✕ 1024 kg.)________ m
If the velocity of the solar wind is about 4.0 ✕ 102 km/s and the visible tail of a comet is 5.0 ✕ 108 km long, how many days does an atom in the solar wind take to travel from the nucleus to the end of the visible tail? (Note:1 day = 86,400 seconds.)
The mass of an average comet's nucleus is about 1.0 ✕ 1014 kg. If the Oort cloud contains 2.0 ✕ 1011 comet nuclei, what is the mass of the cloud in units of Earth masses? (Note: Earth's mass is 5.97 ✕ 1024 kg.)________ m
Compare that with Uranus's mass. (Note: Uranus's mass in units of Earth's mass is 14.5 M.)
mass of the Oort Cloud / mas of Uranus =________
Chapter 9 Solutions
Understanding Our Universe
Ch. 9.1 - Prob. 9.1CYUCh. 9.2 - Prob. 9.2CYUCh. 9.3 - Prob. 9.3CYUCh. 9.4 - Prob. 9.4CYUCh. 9.5 - Prob. 9.5CYUCh. 9.6 - Prob. 9.6CYUCh. 9 - Prob. 1QAPCh. 9 - Prob. 2QAPCh. 9 - Prob. 3QAPCh. 9 - Prob. 4QAP
Ch. 9 - Prob. 5QAPCh. 9 - Prob. 6QAPCh. 9 - Prob. 7QAPCh. 9 - Prob. 8QAPCh. 9 - Prob. 9QAPCh. 9 - Prob. 10QAPCh. 9 - Prob. 11QAPCh. 9 - Prob. 12QAPCh. 9 - Prob. 13QAPCh. 9 - Prob. 14QAPCh. 9 - Prob. 15QAPCh. 9 - Prob. 16QAPCh. 9 - Prob. 17QAPCh. 9 - Prob. 18QAPCh. 9 - Prob. 19QAPCh. 9 - Prob. 20QAPCh. 9 - Prob. 21QAPCh. 9 - Prob. 22QAPCh. 9 - Prob. 23QAPCh. 9 - Prob. 24QAPCh. 9 - Prob. 25QAPCh. 9 - Prob. 26QAPCh. 9 - Prob. 27QAPCh. 9 - Prob. 28QAPCh. 9 - Prob. 29QAPCh. 9 - Prob. 30QAPCh. 9 - Prob. 31QAPCh. 9 - Prob. 32QAPCh. 9 - Prob. 33QAPCh. 9 - Prob. 34QAPCh. 9 - Prob. 35QAPCh. 9 - Prob. 36QAPCh. 9 - Prob. 37QAPCh. 9 - Prob. 38QAPCh. 9 - Prob. 39QAPCh. 9 - Prob. 40QAPCh. 9 - Prob. 41QAPCh. 9 - Prob. 42QAPCh. 9 - Prob. 43QAPCh. 9 - Prob. 44QAPCh. 9 - Prob. 45QAP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- What evidence indicates that a comets nucleus is rich in ices?arrow_forwardWhat is the difference between a comets dust tail and a comets gas tail? What does that tell you about the composition and origin of comets?arrow_forwardIf the velocity of the solar wind is about 4.0 102 km/s and the visible tail of a comet is 1.0 108 km long, how many days does an atom in the solar wind take to travel from the nucleus to the end of the visible tail? (Nate: 1 day = 86,400 seconds.)arrow_forward
- Suppose you were designing a spacecraft that would match course with a comet and move with it for a while. What sorts of instruments would you put on board to gather data, and what would you like to learn?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? 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?arrow_forwardWe saw that the Oort cloud extends to 50,000 AU. What is the orbital periodof a comet with a semimajor axis of 50,000 AU?arrow_forward
- What is the asteroid's orbital radius? What is the asteroid's orbital speed?arrow_forwardWhat is the difference between a meteoroid and an asteroid? Is there a sharp distinction?arrow_forwardRefer to Example 13.1. How would the calculation change if a typical comet in the Oort cloud is larger-say, 50 km in diameter?arrow_forward
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