UNDERSTANDING THE UNIVERSE(LL)-W/CODE
3rd Edition
ISBN: 9780393869903
Author: PALEN
Publisher: NORTON
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Chapter 7.1, Problem 7.1CYU
To determine
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1) Assume a reasonable density for a trans-Neptuian object with the same mass as Earth, located 50 AU from the sun. Additionally, calculate it's diameter in units of Earth radii.
9) An interstellar cloud fragment 0.2 light-year in diameter is rotating at a rate of one revolution per million years. It
now begins to collapse. Assuming that the mass remains constant, estimate the cloud's rotation period when it has
shrunk to (a) the size of the solar nebula, 100 AU across, and (b) the size of Earth's orbit, 2 AU across.
(answers: 0.016 revolutions per year, and an orbital period of 62.5 years,
This is 40 revolutions per year, and an orbital period of 0.025 years, or just a little over 9 days)
Chapter 7 Solutions
UNDERSTANDING THE UNIVERSE(LL)-W/CODE
Ch. 7.1 - Prob. 7.1CYUCh. 7.2 - Prob. 7.2CYUCh. 7.3 - Prob. 7.3CYUCh. 7.4 - Prob. 7.4CYUCh. 7.5 - Prob. 7.5CYUCh. 7 - Prob. 1QAPCh. 7 - Prob. 2QAPCh. 7 - Prob. 3QAPCh. 7 - Prob. 4QAPCh. 7 - Prob. 5QAP
Ch. 7 - Prob. 6QAPCh. 7 - Prob. 7QAPCh. 7 - Prob. 8QAPCh. 7 - Prob. 9QAPCh. 7 - Prob. 10QAPCh. 7 - Prob. 11QAPCh. 7 - Prob. 12QAPCh. 7 - Prob. 13QAPCh. 7 - Prob. 14QAPCh. 7 - Prob. 15QAPCh. 7 - Prob. 16QAPCh. 7 - Prob. 17QAPCh. 7 - Prob. 18QAPCh. 7 - Prob. 19QAPCh. 7 - Prob. 20QAPCh. 7 - Prob. 21QAPCh. 7 - Prob. 22QAPCh. 7 - Prob. 23QAPCh. 7 - Prob. 24QAPCh. 7 - Prob. 25QAPCh. 7 - Prob. 26QAPCh. 7 - Prob. 27QAPCh. 7 - Prob. 28QAPCh. 7 - Prob. 29QAPCh. 7 - Prob. 30QAPCh. 7 - Prob. 31QAPCh. 7 - Prob. 32QAPCh. 7 - Prob. 33QAPCh. 7 - Prob. 34QAPCh. 7 - Prob. 35QAPCh. 7 - Prob. 36QAPCh. 7 - Prob. 37QAPCh. 7 - Prob. 38QAPCh. 7 - Prob. 39QAPCh. 7 - Prob. 40QAPCh. 7 - Prob. 41QAPCh. 7 - Prob. 42QAPCh. 7 - Prob. 43QAPCh. 7 - Prob. 44QAPCh. 7 - Prob. 45QAP
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