A proton p trabels with a speed of 18 m/s toward the top of the page through a uniform magnetic field of 2t directed into the page. What are the magnitude and direction of the magnetic force on the proton?
A proton is propelled at 2 x 10^6 m/s perpendicular to a uniform magnetic field. If it experiences a magnetic force of 5.8 x 10^-11 N, what is the strength of the megnetic field?