A particle of unknown charge q and unknown mass m moves at a speed of v = 4.8 x1 10^6 m/s in the +x direction into a region of constant magnetic field.
The field has a magnitude of 0.5 T and is oriented in the +z direction. The particle is deflected in the -y direction and traces out of a fragment of a circle of radius 0.1m.
a) What is the sign of the charge particle
b) what is the charge to mass ratio?