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Solve the all parts of given question:

Question: Assume the corners of a cube of side a are occupied each by a positive charge q.

Part A: What is the net force on each of the eight charges?

Part B: How much electrical energy was needed to bring all the charges to this configuration?

Part C: If one of the charges was free to move, it will accelerate away from the rest of charges. What will be its final speed when it is very far away?

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