The diagram shows part of the path of a proton in the linac. Point A and point B
are at the centres of two successive gaps between drift tubes.
The a.c. supply has a frequency of 198 MHz. The average kinetic energy of the
proton as it moves from A to B is 2.0 MeV.
Calculate the distance from A to B. You may assume that the proton speed is
non‑relativistic.
Distance = ........................................................
