Recent content by joannananaa

Thank you :) Um...I just plugged them into the formula and wrote one as negative and one as positive. I'm pretty lost.

1. Three equal positive point charges of magnitude Q = 5.00μ C are located at three corners of a square of edge length d = 7.8 cm. A negative charge -15.00μ C is placed on the fourth corner. At the position of the negative charge, what is the magnitude of the electric field due to the three...