Question

Our sun's density at its core (which consists primarily of electrons and protons) is about 80 g/cm^3 Express the density in SI units. The lunar mass is about 7.35 times 10^22 kg (which is 0123 of earth's mass) and the radius is 1738 km. Estimate the mean density of the moon and compare it to the mean density of the earth. Any interesting conclusions?

Answer 1

103 kg 3 density of the sun -p 80g/cm' -80 -2 10 m =8OX 103-0 lunar mass,m-7.35x10 kg and radius r-1738 km and 3 3 2.199064e 019 m density of moon = Pn= -3342.331-3.34g /cm density of earth = 5.51 g / cmT the density of moon is less than earth density which mean that the mass of earth is muchtightly packed than the mass of the moon which might depend inthe magnitude of total gravitational force that kept the body to gether,more the mass mean more the gravity and should be high in density