Universe
Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 18, Problem 42Q
To determine

The average speed as a fraction of the speed of light at which the shock wave has spread away from the site of the supernova. It is given that the remnant of the supernova is present about 3000pc(10000ly) from Earth and it expanded about 3pc(10 ly) in roughly 300 years.

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