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Homework Statement
Find the electric potential difference at a point 4.0x10-2m away from an alpha particle.
Homework Equations
V= kq/r
The Attempt at a Solution
k= 9x109
r= 4.0x10-2
I'm not quite sure how to get this answer considering I don't have any charge and there's nothing that says to use the charge from the previous question...
Help, please?