Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Global Edition
33
Astrophysics and Cosmology
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33-1 to 33-3: Stars, Galaxies, Stellar Evolution, Distances
33-4: General Relativity, Gravity and Curved Space
33-5: Redshift, Hubble's Law
33-6 to 33-8: The Big Bang, CMB, Universe Expansion
33-9: Dark Matter, Dark Energy

Problem 9
A
ρw=1.83×109 kg/m3\rho_w = 1.83 \times 10^9 \textrm{ kg/m}^3, 3.3×1053.3 \times 10^5 times as large

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