Hi I need help finding what the acceleration is for the following problem: A particle with a mass of 1.81x10(-3) kg and a charge of 1.22 x 10(-8) C has at a given instant a velocity v=(3.11 x 10(4) m/s)j. What are the magnitude and direction of the particle's acceleration produced by a uniform magnetic field B= (1.63 T)i + (0.980 T)j? I know that F=qv X B and F=ma so a= (qv X B)/m I don't know what to do from there. I think that the vector dot product is confusing me. Please help! Thank-you.