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Giancoli 7th Edition textbook cover
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 10
Q

A neutron star whose mass is 1.5 solar masses has a radius of about 11 km. Calculate its average density and compare to that for a white dwarf (Problem 9) and to that of nuclear matter.

A
ρn=5.4×1017 kg/m3\rho_n = 5.4 \times 10^{17} \textrm{ kg/m}^3, ρnρw=2.9×108\dfrac{\rho_n}{\rho_w} = 2.9 \times 10^8, ρnρnuclear matter=1.3\dfrac{\rho_n}{\rho_{\textrm{nuclear matter}}} = 1.3
Giancoli 7th Edition, Chapter 33, Problem 10 solution video poster
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COMMENTS
By cparish on Fri, 3/15/2024 - 11:11 PM

Please check your numbers for the neutron star : nuclear matter density ratio: I got ~2.3 with 1.2x10^(-15) as the radius of the nuclear matter and all else the same numbers...

By cparish on Fri, 3/15/2024 - 11:12 PM

I did the algebraic calculation via Google, btw.

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