The microwaves in a microwave oven are produced in a special tube called a magnetron. The electrons orbit in a magnetic field of 9.0×10?2T at a frequency of 2.5GHz , and as they do so they emit 2.5 GHz electromagnetic waves.If the maximum diameter of the electron orbit before the electron hits the wall of the tube is 2.3 cm , what is the maximum velocity the electrons may have?