The Cosmic Perspective Fundamentals (2nd Edition)
The Cosmic Perspective Fundamentals (2nd Edition)
2nd Edition
ISBN: 9780133889567
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 9, Problem 5QQ

Choose the best answer to each of the following. Explain your reasoning.

What happens to a low-mass star after helium fusion begins? (a) its luminosity goes up. (b) its luminosity goes down. (c) Its luminosity stays the same.

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PLEASE be clear in your answer since the last time I posted was incorrect, and only answer part b, thanks.
Please Explain The hotness of stars goes up to millions of degrees Celsius. The coldness of gases can go as low as -273.15 o C. How do you explain the absence of symmetry between hot and cold? Is it possible that there is also a limit to the hotness of any object in the universe? Show your step-by-step solutions.
Hi, pls help me answer these questions. I hope I'd get all the items done for reference purpose. Thank you so much. ***1. From your understanding of nuclear fission, explain how an atomic bomb works. 2. Why do heavy elements such as uranium undergo fission while light elements such as hydrogen and lithium undergo fusion? 3. What are the advantages of a fusion reactor over a fission reactor? What are the practical difficulties in operating large-scale fusion reactor?
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