Fundamentals of Physics Extended
Fundamentals of Physics Extended
10th Edition
ISBN: 9781118230725
Author: David Halliday, Robert Resnick, Jearl Walker
Publisher: Wiley, John & Sons, Incorporated
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Chapter 43, Problem 55P
To determine

To calculate:

(a) the number density of protons at the center of the Sun.

(b) the ratio of the proton density to the density of particles in an ideal gas at standard temperature and pressure.

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In a neutron star, gravity causes the electrons to combine with protons to form neutrons. A typical neutron star has a mass half that of the sun, compressed into a sphere of radius 20 km. If such a neutron star contains 6.0 × 1056 neutrons, calculate its density in grams per cubic centimeter.Compare this with the density inside a 232Th nucleus, in which 142 neutrons and 90 protons occupy a sphere of radius 9.1 × 10-13 cm. Take the mass of a neutron to be 1.675 × 10-24 g and that of a proton to be 1.673 × 10-24 g.
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