The space between the plates of a flat capacitor is filled with a dielectric with a dielectric constant e = 4. The potential difference between the plates is U = 300 V, the distance between them is d = 1 cm. The dielectric contains two air bubbles of radius r = 1 mm, the distance between them is l = 1 cm , and they are located in a plane parallel to the plates. Estimate the magnitude and direction of the force of electrostatic interaction between bubbles.
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