The charges on the upper part and the lower-left produce a force, which points towards the lower left.

The remaining two charges produce a force in the upper left direction.

Because of symmetry, these two forces have equal magnitude.

The distance to the center is given by:

d_{c} = sqrt(2)(0.005) = 7.07 × 10^{-3}.

What is the force *F* on the 1.0 nC charge in the middle of the figure due to the four other charges? Give your answer in component form.

Assume that *x*-axis is directed horizontally to the right, and *y*-axis is directed vertically upward.

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