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if a ball is located 4 meters in front of a mirror, what distance separates the object from the image? please Use your diagram to aid your answer.
Please solve this problem. And please keep in mind that i have just passed 10th standard guyz.
at each of the four corners of a sqare of side A, a charge +q is placed freely. what charge should be placed at the centre of the sqare so that whole system be in equilibrium