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April 20, 2014

Homework Help: physics, help urgent!

Posted by Brette on Wednesday, November 14, 2012 at 2:55pm.

charge Q = +4.5 C is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 C is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the x-axis under the influence of the charge Q only (gravity can be neglected) and eventually reaches point B on the x-axis at x = 10.0 cm. (a) Calculate the potential difference between point B and point A (VAB = VB { VA). (b) Calculate the speed of the small object when it reaches point B

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