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Two positive point charges, each of which has a charge of 1.9*10^-9C, are located at y=0.38m and y=-0.38m.

a. Find the magnitude of the resultant electrial force on a charge of 1.8*10^-9 C located at x=0.28m. Answer in N.

Note: I used a^2+b^2=c^2 to find r in Coluomb's law which I got as 0.472016949. From that I added F_1+F_2 to get 0.0000000276N which was wrong, what did I do wrong?

b. What is the direction of this force(measured from the positive x-axis, with counterclockwise positive)? Answer in degrees.

Note: Would I find the angle by dividing the two electric force answers and times by tan-1?

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# Homework Help: Point charges problem

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