1. Calculate the Sun's volume as a white dwarf:
* Radius: 15000 km / 2 = 7500 km = 7.5 x 10^6 m
* Volume: (4/3) * π * (7.5 x 10^6 m)^3 ≈ 1.77 x 10^21 m^3
2. Use the Sun's mass to calculate density:
* Mass of the Sun: 1.989 x 10^30 kg
* Density: Mass / Volume = (1.989 x 10^30 kg) / (1.77 x 10^21 m^3) ≈ 1.12 x 10^9 kg/m^3
Therefore, the density of the Sun as a white dwarf would be approximately 1.12 x 10^9 kg/m^3. This is incredibly dense, about 1 million times denser than water!
Important Note:
* White dwarfs are incredibly dense due to the immense gravitational pressure squeezing the matter into a very small space.
* This density calculation is an approximation. The actual density of a white dwarf can vary depending on its composition and internal structure.
