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Problem: (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?

FREE Expert Solution

Density:

ρ=mV

Volume, V of a sphere:

V=43πr2

(a)

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 m

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Problem Details

(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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