Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 3.8 x 1028 kg and 1.3 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)?