Volume, V of a sphere:
For the sun:
m = 1.99 × 1030 kg, r = 6.96 × 108 m
Volume, V of the sun:
V = (4/3)(π)(6.96 × 108)3 = 1.4123 × 1027 m3
(a) What is the average density of the sun?
(b) What is the average density of a neutron star that has the same mass as the sun but a radius of only 20.0 km?
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