Electric Potential- Two Charges

AI Thread Summary
The discussion revolves around calculating the speed of two identical charged particles as they move apart from an initial distance of 4.0 cm to 10.0 cm. The potential energy (PE) at the initial distance is calculated to be 1.40e-4 V, but the next step in the calculation is unclear to the participant. To find the speed of the particles at 10 cm apart, the potential energy must be recalculated at that distance. Understanding the relationship between potential energy and kinetic energy is essential for solving the problem. The conversation emphasizes the need to apply the conservation of energy principle to determine the final speed of the particles.
chapmanv
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Homework Statement


Two identical particles, each with a mass of 2.0 mg and a charge of 25 nC, are releasedsimultaneously from rest when the two are 4.0 cm apart. What is the speed of either particle at the instant when the two are separated by 10 cm?

Homework Equations


PE=ke*q1q2/r

The Attempt at a Solution


I have calculated the PE at 1.40e-4 V, but don't know where to go from there.
 
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Hi chap, and welcome to PF :)

What's the PE by the time they are 10 cm apart ?
 

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