Help plz with explanation

O words Problem a) ( 1 the domain of elementary particles, a natural unit of mass is the mass of a nucleon, that is, a proton or a neutron. Given the nucleon mass as 1.67*10-27 Kg and the gravitational stant G = 6.67*10-11 m3/(kg s2), compare the gravitational attraction of two proton with their electrostatic repulsion. This shows why we call gravitation a very weak force. em b) (1 in your own words, what are the limits of application of the Coulomb force. I explor ew Insert Format Tools Table Paragraph | B I U A & Ty BODY AS EVEVE To VX