Find the average density of a white dwarf star if it has a mass equal to that of the Sun (2.0 × 10³⁰ kg) and a radius equal to that of the Earth (6.4 × 10⁶ m). A)9.0 × 10⁶ kg/m³ B)1.8 × 10⁷ kg/m³ C)1.8 × 10⁹ kg/m³ D)3.6 × 10¹⁰ kg/m³ E)9.0 × 10⁷ kg/m³

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Quizplus · Accepted Answer

The volume of the white dwarf is calculated using the formula for the volume of a sphere, V = (4/3)πr³. Substituting the radius of the Earth, the volume is approximately 1.1 × 10²¹ m³. The density is mass/volume, so using the mass of the Sun, the density is approximately 1.8 × 10⁹ kg/m³.

Find the Average Density of a White Dwarf Star If