Electric field - multiple choice - Physics Unit 4 Specimen

[jsmith613]

Homework Statement

see attached file

Homework Equations

The Attempt at a Solution

ok so I get that the answer is B
but is it because they have the same q/m ratio?

 

[gneill]

ok so I get that the answer is B
but is it because they have the same q/m ratio?

Essentially, yes.

You should be able to work out mathematically what the accelerations are for an equal variation in the electric field (say, E = k*E_o) given that when the field is E_o they are both motionless. Hint: find the charge on each in terms of E_o and mass.