1. The problem statement, all variables and given/known data the charge of Q= 1.6 uC is moving along the line x=y with speed v= 4.0*10^5 m/s. What is the vecotr force it experiences due to the magnetic field B= Boz, where Bo = 0.25T? 2. Relevant equations 3. The attempt at a solution i know Fb must be perpendicular to B and B is on the z axis. but i don't know what should i do afterwards. please help.