A particle with a mass of 2.00e-16 kg and a charge of 29.

A particle with a mass of 2.00e-16 kg and a charge of 29.0 nC starts from rest, is accelerated by a strong electric field, and is fired from a small source inside a region of uniform constant magnetic field 0.710 T. The velocity of the particle is perpendicular to the field. The circular orbit of the particle encloses a magnetic flux of 15.0 µWb.