1. The problem statement, all variables and given/known data In a mass spectrometer, the mass of charged objects is inferred from how much thier trajectory curves when passed through a perpendicular magnetic field. A particle has a charge of q=1.602x10^-19 C and is traveling at v = 2.00x10^5 m/s in a perpendicular magnetic field of B=100gauss. If the radius of the curvature is found to be 20.8 cm, what is the mass of the particle? & can you identify this particle? 2. Relevant equations Fc=mv2/r 3. The attempt at a solution Fc=m(2.00x10^5 m/s)2/r I am guessing this is proton because of the positive charge.