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Electric Potential & Capacitance Unit

PROGRESSIVE SCIENCE INITIATIVE® (PSI®)

2 Comments

Lanae Schulz • 3 weeks, 4 days ago • login to reply

In the Electric Potential & Capacitance Multiple Choice, question 17 asks for "the kinetic energy of the two particle system" but the answer (C) is for the total mechanical energy of the system.

John Ennis • 2 weeks, 6 days ago • login to reply

Lanae, We used F = mv^2/r and F = e^2/(4 pi epsilon r^2). Set them equal to each other, multiply both sides by 1/2, cancel one of the r's, resulting in answer B. Please let me know if that works. John

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