1. The problem statement, all variables and given/known data An electron has a velocity of 1.63×104 m/s (in the positive x direction) and an acceleration of 1.98×1012 m/s2 (in the positive z direction) in uniform electric and magnetic feilds. If the electric field has a magnitude of 19.8 N/C (in the positive z direction), what is the y component of the magnetic field in the region? 2. Relevant equations this I'm really not sure... but could lorentz force law be applied to this question? F=q(E+vxB) C^2= a^2+b^2?????? 3. The attempt at a solution I'm really sorry but I seem to really have no idea bout this one... heres what I thought but is wrong.. Since they give you the acceleration in the z direction, with it the force due to the movement of the electron can be found. (or does this not work because F=ma doesn't apply to electric forces?) -then I thought maybe if I found the force then i can use Lorentz' equation to solve for B? But because the question is asking for a y component i'm really stuck on how to relate the acceleration, velocity and E field into finding the magnetic field. Can someone help push me towards the right direction for this question?? Thanks!!!