- #1

mrroboto

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## Homework Statement

The microwaves in a microwave oven are produced in a special tube called a magnetron. The electrons orbit the magnetic field at 2.4 GHz, and as they do so they emit 2.4 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 cm, what is the maximum electron kinetic energy?

## Homework Equations

frequency = qB/2(pi)m

## The Attempt at a Solution

2.4 GHz = (1.6 x 10^-19)(B)/ 2(pi)(9.109 x 10-31)

then solve for B. is that right?

I don't understand part (b) at all