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 8QAP
To determine
The definition of asteroids.
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The condensation sequence predicts that asteroids consisting of carbonaceous material would form
a.
in the inner solar system where it is warmer.
b.
at random locations then migrating to the outer asteroid belt due to the gravitational influence of Jupiter and Saturn.
c.
in the outer solar system where it is very cold.
d.
between the orbits of Jupiter and Saturn.
e.
in the outer asteroid belt where it is cooler.
The Near Earth Asteroid Rendezvous (NEAR), after traveling 2.1 billion kmkm, is meant to orbit the asteroid Eros at a height of about 15 kmkm. Eros is roughly 40km×km× 6km×km×6kmkm. Assume Eros has a density (mass/volume) of about 2.3×103kg/m32.3×103kg/m3.
Part A
What will be the period of NEAR as it orbits Eros?
Approximately how many asteroids that are 0.99 km in radius would it take to make a planet which has a radius of 6460.0 km?
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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- Present theory suggests that giant planets cannot form without condensation of water ice, which becomes vapor at the high temperatures close to a star. So how can we explain the presence of jovian-sized exoplanets closer to their star than Mercury is to our Sun?arrow_forwardDescribe and compare the rings of Saturn and Uranus, including their possible origins.arrow_forwardSaturn is about 60,000 km in radius, and its rings are only about 0.01 km thick with ripples 100 m high. Design a really big model with Saturn 60 inches in radius (10 ft in diameter). How thick must the rings be in your model and how high can the ripples be? A sheet of paper is about 0.004 inches thick.arrow_forward
- List at least three major differences between Pluto and the terrestrial planets.arrow_forwardCalculate how many Earths would fit into the volumes of Saturn, Uranus, and Neptune.arrow_forwardthe 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
- 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 =________arrow_forwardThe 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.)________ marrow_forward
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