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Homework Statement
Two stationary point charges + 3.00 {\rm nC} and + 2.00 {\rm nC} are separated by a distance of 50.0 \rm cm. An electron is released from rest at a point midway between the two charges and moves along the line connecting the two charges
Homework Equations
What is the speed of the electron when it is 10.0 \rm cm from the + 3.00- {\rm nC} charge?
The Attempt at a Solution
Dont know where i am going wrong and need to inpout this like now!
using
v = sqrt(2Q(Va-Vb)/m)
Got Va-Vb = 225
then surely i just chuck in the value for Q of an Electron and the Mass!
But no work!