two positive point like charges 4 MC each and each of mass 0.3 g are suspended as a pendulum. A length of a string is 30 cm. Electric field E is applied vertically up. WHat is the magnitude of the...

two positive point like charges 4 MC each and each of mass 0.3 g are suspended as a pendulum. A length of a string is 30 cm. Electric field E is applied vertically up. WHat is the magnitude of the electric field if charges are in equilibrium?

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