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## Homework Statement

2 identical +10uC point charges are initially spaced 5.5cm from each other. If they are released at the same instant from rest, how fast will they be moving when they are very far away from each other? Assume they have identical masses of 1.0mg.

## Homework Equations

Maybe... W=Fd=qEd=qV=0.5mv^2

## The Attempt at a Solution

initially,

W=qEd

=kqQ/r

=8.99*10^9*(10*10^-6)*(10*10^-6)/0.055

=16.3454

when they are very far apart,

W=0.5mv^2

=0.5*10^-6*v^2

=16.3454

v=(16.3454*2/10^-6)^0.5

=5717ms^-1

but the real answer is 4.1*10^3ms^-1...