6. (10 points) In the future, a limitless energy may be provided by forcing protons to collide and fuse into heavier elements and in the process release lots of energy. Protons naturally repel one another through the Coulomb force. One can heat the protons so that they gain thermal energy, which appears as speed. With enough speed protons can have kinetic energy sufcient to overcome the electrical repulsion and collide. What amount of kinetic energy applied to a proton is required to allow it to approach and touch another stationary proton? Proton charge is 1.6 x 10'19 C Proton mass is 1.67 x 10'27 kg Proton radius is 1.2 x 10'15 m