Question

Calculate the density of a neutron star with a radius 1.7 x 104 m, assuming the...

Calculate the density of a neutron star with a radius 1.7 x 104 m, assuming the mass is distributed uniformly. Treat the neutron star as a giant nucleus and consider the mass of a nucleon 1.675 x 10-27 kg. Your answer should be in the form of N x 1017 kg/m3. Enter only the number N with two decimal places, do not enter unit.

Homework Answers

Answer #1

Volume of a neutron star is given by -

V = (4/3) r3

V = [(4/3) (3.14) (1.7 x 104 m)3]

V = 2.05 x 1013 m3

Therefore, the density of a neutron star which will be given by -

= m / V

where, m = mass of a star = 1.675 x 10-27 kg

then, we get

= [(1.68 x 1030 kg) / (2.05 x 1013 m3)]

= 8.19 x 1016 kg/m3

= 0.82 x 1017 kg/m3

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