Aparticle with charge q and kinetic energy k travels in a uniform magnetic field of magnitude b. if the particle moves in a circular path of radius r, find expressions for each of the following. (use any variable or symbol stated above as necessary.)

Explanation:

In this question it is assumed that expressions for speed and mass are asked

Kinetic energy

since the charge moving in a circle

So we can write

so, the expression for speed

now to obtain the expression for mass

Force F = m×a

and so solving for m we get:

plug expression for v back into KE equation

now rearranging the above equation we get

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explanation: