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Electricity and Magnetism Practice Problem 1 (and its solution) covers calculating the charge necessary for two dust grains to overcome gravitational attraction.
Course: 8.02 Electricity and Magnetism, Spring 2002
Instructor: Prof. Walter Lewin
Prof. Walter Lewin, 8.02 Electricity and Magnetism, Spring 2002. (Massachusetts Institute of Technology: MIT OpenCourseWare), http://ocw.mit.edu (Accessed November 21, 2008). License: Creative Commons BY-NC-SA
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