From the surface of the negatively charged sphere separ

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Description

From the surface of the negatively charged sphere separated without initial velocity of the electrons. What will be its speed at a great distance from the ball, if the ball radius R = 1 cm, ball charge 1 nC?

Additional information

Task 30870. Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
If you have any questions about the decision to write. I try to help.

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