1. The problem statement, all variables and given/known data An ink drop with charge q = 3 ✕ 10-9 C is moving in a region containing both an electric field and a magnetic field. The strength of the electric field is 8E5 N/C and the strength of the magnetic field is 1.3 T. At what speed must the particle be moving perpendicular to the magnetic field so that the magnitudes of the electric and magnetic forces are equal? 2. Relevant equations F= q x v x B 3. The attempt at a solution Right now I know the magnitude of the electric field is 8E5 so I can take that and set it equal to my other numbers... 8 x 10^5 = 3E-9 C x 1.3 T x ( ? M/s) Solving for m/s, I get 2.05E14 which turns out to be incorrect. Not sure what i am doing wrong any help would be nice!