Potential Energy of a Charged Particle A +3.0 nC charge Q is initially at rest a distance of 10 cm (r) from a +5 0-nC charge q fixed at the origin (Figure below). Naturally, the Coulomb force accelerates Q away from q, eventually reaching 15 cm (r2). The charge Q is repelled by q, thus having work done on it and fosing potential energy. Q- +3.0 nC q - +5.0 nC 10 ст 15 cm What is the change in the potential energy of the two-charge system from ri to r2? (Calculate the potential energy with the definition given above. U12 "“Fd7 Since O started from rest. this is the same as the kinetic energy. rr2

Potential Energy of a Charged Particle A +3.0 nC charge Q is initially at rest a distance of 10 cm (r) from a +5 0-nC charge q fixed at the origin (Figure below). Naturally, the Coulomb force accelerates Q away from q, eventually reaching 15 cm (r2). The charge Q is repelled by q, thus having work done on it and fosing potential energy. Q- +3.0 nC q - +5.0 nC 10 ст 15 cm What is the change in the potential energy of the two-charge system from ri to r2? (Calculate the potential energy with the definition given above. U12 "“Fd7 Since O started from rest. this is the same as the kinetic energy. rr2