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December 21, 2014

Homework Help: Physics

Posted by Susie on Friday, February 12, 2010 at 12:55pm.

Consider the electric field created by a very long charged line of negative linear charge density -2.50 nC/m.

A small positive point charge of 8 mC moves from a distance of 9 cm to a distance of 17 cm.

How much work is done by the electric field?

Hint: The electric field for a long charged line is:

Express the result in the unit mJ and to three significant figures.

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