Problem: Neutron stars are believed to be composed of solid nuclear matter, primarily neutrons. Assuming that a neutron star has the same density as a neutron  (density = 4.0×1014 g/cm3), calculate the mass (in kg) of a small piece of a neutron star the size of a spherical pebble with a radius of 0.16 mm .

FREE Expert Solution

Recall that density is the ratio of the mass and volume of an object:


density=massvolume


Also, the volume of a sphere is given by:


V=43πr3


V=43π(0.16 mm×1 cm10 mm)3


V = 1.716 x 10-5 cm3


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Problem Details

Neutron stars are believed to be composed of solid nuclear matter, primarily neutrons. 

Assuming that a neutron star has the same density as a neutron  (density = 4.0×1014 g/cm3), calculate the mass (in kg) of a small piece of a neutron star the size of a spherical pebble with a radius of 0.16 mm .

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