1. The problem statement, all variables and given/known data A singly charged positive ion has a mass of 2.51 X 10-26 kg. After being accelerated through a potential difference of 264 V, the ion enters a magnetic field of 0.570 T, in a direction perpendicular to the field. Calculate the radius of the path of the ion in the field 2. Relevant equations r=mv/qB 3. The attempt at a solution Im not sure how to get the value of v from the information in the problem.