The Cosmic Perspective (9th Edition)
The Cosmic Perspective (9th Edition)
9th Edition
ISBN: 9780134874364
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 19, Problem 59EAP

The Speed of Supernova Debris. The kinetic energy  E kinetic  of an amount of mass traveling at a velocity is given by the formula  E kinetic = M v 2 / 2 . The total kinetic energy of the matter ejected from a supernova explosion is about  10 44  joules . Determine the typical speed at which that matter is ejected from a supernova with a mass of  10 M sun . Compare that speed with the Sun’s orbital speed around our galaxy. Based on your comparison, do you think the galaxy’s gravity would be strong enough to retain the supernova debris if there were no interstellar medium to slow it down? Explain.
 

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