A proton circulates in a cyclotron, beginning approximately at rest at the center. Whenever it passes through the gap between dees, the electric potential difference between the dees is 110 V. (a) By how much does its kinetic energy increase with each passage through the gap? (b) What is its kinetic energy as it completes 126 passes through the gap? (c) Let r126 be the radius of the proton's circular path as it completes those 126 passes and enters a dee, and let r127be its next radius, as it enters a dee the next time. By what percentage does the radius increase when it changes from r126 to r127? That is, what is percentage increase = (r127 - r126)/r126*100%?