PHYS 1010 Study Guide - Midterm Guide: Antiderivative, Electric Potential Energy, Circuit Diagram
16 Oct 2018
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Determine such that when a third charge is placed at (0, 0) the force on it is zero. Start with a gure depicting the situation and indicate the forces acting on the third charge. Explain whether it matters whether the third charge is positive or negative. 1: [5] a classical model for the hydrogen atom can be imagined as the (heavy) proton being at rest, while the electron executes a circular orbit of radius r = 0. 53 10 10 m. Find the speed of the electron from the assumption that the static coulomb force provides the centripetal acceleration for the electron. Compare the electron"s kinetic energy to the electric potential energy (calculate both, and ignore gravity; the electrostatic potential energy is uel(r)) = kq1q2/r). 2: [5] consider two parallel (in nitely) large plates separated by distance d, both charged to the same surface density of +1 nc/mm2.
