Charged particles A
are entered vertically into a uniform magnetic field as the arrow at the bottom of the box indicates. Their respective traces of movement are the two green half circles. Particles A
have the same mass, and the radii of their traces are \(2R\) and \(R,\) respectively. What are the electrical signs of the two particles? And, if the quantity of the electric charge of A
is \(q,\) then what is the quantity of the electric charge of B
The direction of the magnetic field is downward through the plane.