The microwaves in a microwave oven are produced in a special tube called a magnetron. The electrons orbit the magnetic field at $2.4 \mathrm{GHz}$, and as they do so they emit $2.4 \mathrm{GHz}$ electromagnetic waves.
a. What is the magnetic fiEld strength?
b. If the maximum diameter of the electron orbit before the electron hits the wall of the tube is $2.5 \mathrm{cm},$ what is the maximum electron kinetic energy?