Review

F1on2 = k q1 q2 / r122 PE12 = k q1 q2 / r12

Fon 2 = q2 Eat 2 PEof 2 = q2 Vat 2

Eat 2 = k q1 / r122 Vat 2 = k q1 / r12

use in use in

S F = ma KEi + PEi = KEf +PEf +Elost

VECTOR scalar

Ex = -DV / Dx

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