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October 20, 2014

Homework Help: Physics!

Posted by Collin on Tuesday, February 7, 2012 at 8:18pm.

Two metal spheres with masses 4.0 g and 6.0 g are tied together with 6.0 cm long massless string and are at rest on a frictionless surface. Each sphere is charged to + 5.0 nC.
a. What is the energy in the system?

b. What is the tension in the string?

c. The string is cut. What is the speed of the 4.0 g sphere when they are far apart?

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