Again, thanks in advance for the help!

We have two charged particles of equal mass travelling along circular orbits in a region of uniform, constant magnetic field. Particle 1 has a radius of orbit r1 = 5 cm and a speed of v1=10^5 m/s. Particle 2 has Q2=2*Q1, and KE2=2*KE1.

What is the radius of orbit for R2?

I think in this situation r1=sqrt(2)r2

r2=sqrt(KE1*m1)/q1B

r1=sqrt(2*KE1*m1)/q1B