Alright, I just need to find the density of three stars in g/cm^3.(adsbygoogle = window.adsbygoogle || []).push({});

I have been given the following information:

Density of a star = Mass / ((4/3)*pi*Radius^3)

First star is a white dwarf:

Mass = 2 * 10^30 kg

Radius = 5000 km

Second star is a neutron star:

Mass = 2(2 * 10^30) kg

Radius = 20 km

Third is a black hole:

Mass = 5(2 * 10^30 kg)

Radius = 5 km

This is what I did for each:

Convert the mass to grams and convert radius to cm. So...

1. 2 * 10^30 = 2 * 10^33 cm and 5000 km = 500,000,000 cm.

(2*10^33 grams)/((4/3)*pi*(500000000)^3 cm^3)

Density = 3,819,718.63 g/cm^3

Did I do that first one right?

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# Homework Help: Densities of 3 Stars

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