In separate experiments, a large number of particles (all with the same charge, but with a wide variety of masses and speeds) are fired into a region containing a uniform magnetic field. the velocities of the particles are all perpendicular to the field. what do the particles that move in orbits of the same radius have in common? select all that apply. a. they have the same massb. they have the same kinetic energyc. they have the same speedd. they have the same momentum