1. The problem statement, all variables and given/known data Two radioactive isotopes of singly charged plutonium(Pu-249 and Pu-244) are accelerated through a potential difference of 3.00kW and enter a uniform magnetic field of 1.50T directed perpendicular to their velocities. By performing relevat calculations, show that the ratio of the path radii is independent of potential difference and magnetic field. Given: an atomic mass unit = 1.66*10^-27kg 2. Relevant equations R=mv/qB 3. The attempt at a solution How can I start answering this question? From the equation, both "v" and "B" are involved. So isn't it dependent?