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Giancoli's Physics: Principles with Applications, 7th Edition
33
Astrophysics and Cosmology
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33-1 to 33-3: Stars, Galaxies, Stellar Evolution, Distances
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33-4: General Relativity, Gravity and Curved Space
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33-5: Redshift, Hubble's Law
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33-6 to 33-8: The Big Bang, CMB, Universe Expansion
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33-9: Dark Matter, Dark Energy
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Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 37
Q

At approximately what time had the universe cooled below the threshold temperature for producing

  1. kaons (M ≈\approx 500 MeV/c2\textrm{MeV/c}^2),
  2. Υ\Upsilon (M ≈\approx 9500 MeV/c2\textrm{MeV/c}^2), and
  3. muons (M ≈\approx 100 MeV/c2\textrm{MeV/c}^2)?
A
  1. 10−6 s10^{-6} \textrm{ s}
  2. 10−8 s10^{-8} \textrm{ s}
  3. 10−5 s10^{-5} \textrm{ s}
Giancoli 7th Edition, Chapter 33, Problem 37 solution video poster
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