Question

The Sun is a hot plasma (ionized matter) with its inner core at a temperature exceeding ${10}^{7}K$, and its outer surface at a temperature of about $6000K$. At these high temperatures, no substances remain in a solid or liquid phase. In what range do you expect the mass density of the Sun to be, in the range of densities of solids and liquids or gases? Check if your is correct from the following data: mass of the Sun $=2.0\times {10}^{30}kg$, radius of the Sun $7.0\times {10}^{8}m$.

Answer 1

Actual Density of the Sun$=\frac{Mass}{Volume}$
$=\frac{2\times {10}^{30}kg}{\frac{4}{3}\pi \times (7\times {10}^8{)}^3{m}^3}$
$=1.4\times {10}^{3}kg{m}^{-3}$