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Neutron stars are believed to be composed of solid nuclear matter, primarily neutrons. (a) If the radius of a neutron is 1.0 x 10^-13 cm, calculate the density of a neutron in g/cm^3. (b) Assuming that a neutron star has the same density as a neutron, calculate the mass in kilograms of a small piece of a neutron star the size of a spherical pebble with a radius of 0.10 mm.

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