Sunday
May 26, 2013

# Homework Help: physics

Posted by melody on Saturday, October 2, 2010 at 10:58am.

Two point charges are located as shown in the figure, with charge q1 = +3.2 C at x = − 3.0 m, y = 0, and charge q2 = +2.5 C at x = +1.0 m, y = +2.0 m. An electron is now taken from a point very far away and placed at the origin. How much work must be done on the electron to move it to the origin?
1 J

Please show calculations, I am at a lost as how to begin...Thank you

• physics - bobpursley, Saturday, October 2, 2010 at 11:18am

Why dont you find the potential at x=0?

Then add the potential contributions from each of the charge.

Then work= potential*e

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