3) A particle With positive Charge q and mass m moves in a uniform Constant magnetic field that points in the z direction. B Bi_ The charge is subject to a linear drag force bv. (a) Find the velocity Of the particle, if its initial velocity is Vo; (b) Find the time dependence of the kinetic energy of the particle. E(t) = = cos(ot) sin(ot)). where r m/b and = qB/m. Partial answer: g(t)