9. A proton moves with an unknown velocity through a

Last updated: 8/7/2022

9. A proton moves with an unknown velocity through a magnetic field of 3.45 x 103 T that points directly north. The proton experiences a force of 2.40 x 10-15 N directly east. What is the magnitude of the velocity? (charge of a proton is +1.6 x 10-1⁹ C) 8.85 x 106 m/s 4.35 x 106 m/s 6.35 x 108 m/s 4.35 x 107 m/s