Since neutron stars consist totally of neutrons, they are extremely massive and have a density that is hard to imagine. A typical radius and mass for a neutron star are 1.80  103 m and 3.80  1028 kg respectively. (a) Determine the density of a neutron star. (b) Determine the weight (in pounds) of a penny (V = 360 mm3) if it were made from this material.

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Units and Dimensions

These are generally defined as the terms which precede or describes the dimensions further. These are also further divided into two parts namely fundamental units and the derived units.