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**1. Two charged particles are traveling in circular orbits with the same speed in a region of uniform magnetic field that is directed into the page, as shown. The magnitude of the charge on each particle is identical but the signs of the charges are unequal. Which one of the entries in the table below is correct?**

The correct answer is B

I understand that the m1>m2 just by using the formula:

r=mv/qB where I canceled the v and B and was left with

m=r*q so b.c the m1 radius is bigger it has a larger mass

The correct answer is B

I understand that the m1>m2 just by using the formula:

r=mv/qB where I canceled the v and B and was left with

m=r*q so b.c the m1 radius is bigger it has a larger mass

**2. I don't understand how to find the sign of the charge. Using the right hand rule I know that the field is going into the page but where is the velocity going or the force? I can't figure out their directions.**