Charge of the Pb nucleus is 1.312*10^-17 C and the radius is 7.11 fm.
A.) Consider a proton that has just enough initial kinetic energy to move from infinitely far away and just reach the surface of the lead nucleus. Assuming that the 208Pb nucleus remains at rest, how is the initial kinetic energy related to the electric potential energy?
B.) How would the trajectory of the proton be affected if the kinetic energy is less?
C.) How would the trajectory of the proton be affected if the kinetic energy is greater?
D.) What minimum kinetic energy is needed for a proton to probe the nucleus? Explain.