Two point charges are placed at the opposite corners of a rectangle as shown. What is the Electrical Field magnitude at each point due to the charges?
Pythagorean theorem, E=kq/r^2
The Attempt at a Solution
r= square root of .8^2 +.4^2 =.89
E= 8.99x10^9 X 4X10^-6 divided by (.89^2)
E=8.99x10^9 X 2X 10^-6 divided by (.89^2)
should I not be dividing by .89^2 but rather the radius of an electron?
I am not sure if A and B should be negative or positive or if I am doing this right..?
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