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Question 1: Calculate the potential energy of a system of two small spheres, one carrying a charge of 2.00 µC and the other a charge of -4.00 µC, with their centers separated by a distance of 0.210 m. Assume zero potential energy when the charges are infinitely separated.

Question 2: Suppose that one of the spheres is held in place and the other sphere, which has a mass of 1.90g, is shot away from it. What minimum initial speed would the moving sphere need in order to escape completely from the attraction of the fixed sphere?

Can someone please explain what the heck is going on?

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Category:- Physics
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