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wheybags
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Homework Statement
Determine the resultant force acting on a point charge of -2 x 10 ^-6 C situated at the origin of a rectangular coordinate system in the vicinity of point charges 3x10^-6 C and -4x10^-6 C at distances 0.12 m along the positive x-axis and 0.08m along the half-line x=y where x,y>0 respectively.
Homework Equations
Coulomb's law
The Attempt at a Solution
I used Coulomb's law twice, taking first the first and second points, the the first and third points, and got -3.75 and 11.25 respectively.
However, the answer is supposedly 14.15 < 34.20°, which I am nowhere near to, and do not even understand.
Help greatly appreciated.