1. The problem statement, all variables and given/known data The microwaves in a microwave oven are produced in a special tube called a magnetron. The electrons orbit the magnetic field at 2.99GHz, and as they do so they emit 2.99GHz electromagnetic waves. What is the magnetic field strength? 2. Relevant equations ƒ=qβ/(2Pi*m) Thus, B= f*2Pi*m/q 3. The attempt at a solution I got the question right. It's just I am having a bit difficult grasping why. I thought that because they stated that the electrons also emit 2.99Hz electromagnetic waves, that this would influence the answer. Could someone please explain to me if electrons emitting waves of the same frequency has any influence on this question and the found B value? And also, if not, why? Thank you so much!