Problem 21: In the figure, the point charges are located at the corners of an equilateral triangle 29 cm on a side. qc qa qb Part (a) Find the magnitude of the electric field, in newtons per coulomb, at the center of the triangular configuration of charges, given that qa = 2.5 nC, qt = -8.8 nC, and qc = 1.3 nC. art (b) Find the direction of the electric field in degrees below the right-pointing horizontal (the positive x-axis).
Problem 21: In the figure, the point charges are located at the corners of an equilateral triangle 29 cm on a side. qc qa qb Part (a) Find the magnitude of the electric field, in newtons per coulomb, at the center of the triangular configuration of charges, given that qa = 2.5 nC, qt = -8.8 nC, and qc = 1.3 nC. art (b) Find the direction of the electric field in degrees below the right-pointing horizontal (the positive x-axis).
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