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Solve the all parts og given question:
Question: Three equal positive point charges of magnitude Q = 7.00 µC are located at three corners of a square of edge length d = 11.0 cm. A negative charge -21.00 µC is placed on the fourth corner.
Part A: At the position of the negative charge, what is the magnitude of the electric field due to the three positive charges?
Part B: What is the magnitude of the attractive force on the negative charge?
Please show your results in detailed calculations.
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