Two small metal spheres with mass 3.16 g and 6.32 g are tied together by a 7.10-cm-long massless string and are at rest on a frictionless surface. Each is charged with +9.00 μC. a.What is the energy (in J)? b. What is the tension (in N) in the string? c. The string is cut. What is the final speed (in m/s) of the lighter sphere when the spheres are far apart? HINT: There are two conserved quantities. Make use of both.

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