A charge of +2 micro-coulombs is placed at the bottom left corner of a rectangle, a charge of -2 micro-coulombs is placed at the top left corner of a...

A charge of +2 micro-coulombs is placed at the bottom left corner of a rectangle, a charge of -2 micro-coulombs is placed at the top left corner of a rectangle, a charge of +7 micro-coulombs is placed at the bottom right corner of a rectangle, and a charge of +7 micro-coulombs is placed at the top right corner of a rectangle. The rectangle has a height of 6.7 cm and a width of 24.7 cm. (See sketch). What is the magnitude of the total electric field at the middle of the left side of the rectangle in units of x 106 N/C?