Particle 1 and particle 2 have masses of m1 = 2.2 × 10-8 kg and m2 = 4.8 × 10-8 kg, but they carry the same charge q. the two particles accelerate from rest through the same electric potential difference v and enter the same magnetic field, which has a magnitude b. the particles travel perpendicular to the magnetic field on circular paths. the radius of the circular path for particle 1 is r1 = 8 cm. what is the radius (in cm) of the circular path for particle 2?