On the heights of a regular hexagon with sides of 5 cm are located equal point charges 6.6 * 10 ^ -9 Cl. Determine the work of electric forces in transferring a charge of 3.3 * 10 ^ -9 Cl from the center of the hexagon in the middle of one of its sides. What is this work, if the charges are equal in magnitude, but neighboring charges of opposite sign?

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