Consider a rectangle with sides of length 5 mm and 7 mm. Three point masses, with...

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Consider a rectangle with sides of length 5 mm and 7 mm. Three point masses, with electric charge +1 µC, -2 uC and +1 µC , are placed at the corners, as shown in the diagram below. +1 μC А y 5 mm -2 με +1 μC 7 mm (a) Calculate the total Electric field at point A, the corner without a charge. Express your result in terms of components using the indicated coordinate system. Consider a rectangle with sides of length 5 mm and 7 mm. Three point masses, with electric charge +1 µC, -2 uC and +1 µC , are placed at the corners, as shown in the diagram below. +1 μC А y 5 mm -2 με +1 μC 7 mm (a) Calculate the total Electric field at point A, the corner without a charge. Express your result in terms of components using the indicated coordinate system.