DQ4A_solution - Discussion Question 4A P212, Week 4...

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Discussion Question 4A P212, Week 4 Electric Potential and Work Electric Potential Energy can be considered unrealized kinetic energy for a particle in a fixed location. It takes work to move a particle from a position of lower potential energy to a position of higher potential energy. This increase in potential energy at rest may be converted to (or “realized as”) kinetic energy when the particle is allowed to move from the position of higher potential energy back to the position of lower potential energy. Imagine that one of your hands is attached to a positive test charge q and the other hand holds a stake that can attach you to the ground. You are first staked to the ground at a distance 10 m from a positive charge Q . (Assume that gravity is zero for this problem, and that you and the test charge are small enough to be treated as point charges). Let’s further assume, when you lift the stake, you (somehow) float without friction… The total mass of you + the mass of charge q + the mass of the stake is M.
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This note was uploaded on 06/16/2011 for the course PHYS 212 taught by Professor Kim during the Spring '08 term at University of Illinois, Urbana Champaign.

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DQ4A_solution - Discussion Question 4A P212, Week 4...

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