- #1
name_ask17
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Homework Statement
An equilateral triangle has sides of 0.11 m. Charges of -8.6, +8.0, and +1.5 µC are located at the corners of the triangle. Find the magnitude of the net electrostatic force exerted on the 1.5-µC charge.
Homework Equations
kqQ/d^2
The Attempt at a Solution
first i did kq1q3/d^2 and got F13=9.595
then i did kq2q3/d^2 and got F12=8.9256
then i set up f12x=8.9256cos60 +f13x=9.590 to get Fx=14.05and then F12y=8.9256sin60 + f13y=0 to get Fy=7.73
then i used the pythagaron theorem to get the total force on q3 as 16.0359N, but that was marked incorrect by the online hw.
can you explain to me where I am going wrond please??