Physics 197 Lecture 7: Some Potential Energy Functions
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Physics 197 Full Course Notes
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Acts between any two particles that have electrical charge: charge: a property possessed by a particle or object that enables it to participate in an electromagnetic interaction, coulomb: 1c = 6. 242 x 10^18 protons. 8. 99 x 10^9 (j)(m)/c^2: limitations: this equation strictly applies only to particles, and assumes neither particle"s speed is close to that of light. The formula assumes the choice of reference separation noted: note: the si unit of charge is the coulomb; a proton has a charge of +e, where e = 1. 602 x 10^ -19 c, while an electron"s charge is -e: only exact when particles are at rest. Electrostatic: velocity independent part of the electromagnetic interaction. If the particles" charges are opposite, their potential energy (though it is always negative) increases as the particles" separation increases: kinetic energy increases as they approach each other. Thursday, september 10, 2015: opposite charges attract.
