(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Three identical 1nC charges are held at the vertices of an equilateral triangle of side 1cm. If the charges are released simultaneously what is the speed of these charges when they are sufficiently farther apart?

A. Write an expression for the change in potential energy

B. Write an expression for the change in kinetic energy

C. Use the mechanical energy conservation principle to find the speed of the charges.

2. Relevant equations

3. The attempt at a solution

A. (1/2mvq)^2 = E(Va-Vb) + (1/2mVA^2)

B. DeltaK=1/2m(VB^2-VA)^2

C. VB = (2(e/m)(Va-Vb) + Va^2)^(1/2)

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Expression for the change in potential energy of charges

Can you offer guidance or do you also need help?

**Physics Forums | Science Articles, Homework Help, Discussion**