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Two positive point charges A and B have ...

Two positive point charges `A` and `B` have charge `+q` and `+2q`; mass `m` and `2m` respectively. Both the charges are released from rest when they are at a distance `l_0` apart. Neglect gravity and also assume the only force acting on either charge is the electrostatic force due to each other. The speed of charge `A` at the instant separation between both charges is `2l_0`

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