Question: Two point charges, q and --q, are separated by a distance l, both being located at a distance l/2 from the infinite conducting plane. Find:

Two point charges, q and --q, are separated by a distance l, both being located at a distance l/2 from the infinite conducting plane. Find:
(a) The modulus of the vector of the electric force acting on each charge;
(b) The magnitude of the electric field strength vector at the midpoint between these charges.

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