A 61.0 cm diameter cyclotron uses a 500 V oscillating potential difference between the dees. The magnetic field strength is 0.790 ?
How many revolutions would a proton make before leaving the cyclotron?
The Attempt at a Solution
I am completely stumped on this problem, I have calculated the max speed, and therefor max kinetic energy. But cannot figure out how to derive number of revolutions from there.
Any hints would be greatly appreciated.