Charged Particles Moving in a Magnetic Field Ranking Task

[seto6]

Homework Statement

Five equal-mass particles (A–E) enter a region of uniform magnetic field directed into the page. They follow the trajectories illustrated in the figure.

Homework Equations

The Attempt at a Solution

i used the formula v=qBr/m
got the following "A,B,C=E,D" apparently this is wrong i do not know why..i find this question contradicting because it says at first "Five equal-mass particles" but the five masses are not the same because the electron is A and proton are the rest. could someone help me

 

[seto6]

got it . it is not solvable

 

[graphene]

What do you want to rank the particles upon?

 

[RoyalCat]

A charged particle doesn't have to be either an electron or a proton. You can have two particles with equal mass, same magnitude of charge, but different sign of charge, like an electron and a positron (Same mass as an electron, but +e charge)

Or you could be discussing macroscopic particles for that matter, onto which you can impart any charge you'd like.

By the way, what is the question here? What are the charge signs and relative velocities of all the particles?