(a) Divide 5.8*10^28 kg by the volume of the star. The volume is (4/3)*pi*r^3.
(b) Multiply the density you get in (a) my 2*10^-7 m^3. That will give you the mass in kg. For the weight (actually, the mass) in lb, assume 2.2 lb per kg.
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 5.8 x 1028 kg and 1.5 x 103 m. (a) Find the density of such a star. (b) If a dime (V = 2.0 x 10-7 m3) were made from this material, how much would it weight (in pounds)?
2 answers
0999