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A trianglular pyramid is constructed of four equilateral triangles of side length 25.0 cm. A small...

A trianglular pyramid is constructed of four equilateral triangles of side length 25.0 cm. A small charged particle with q = 15.0 µC is placed at each of the four corners of the pyramid.

Find:

(a) the total force on one particle;

(answer should be 79.3 N)

(b) the magnitude of the electric field at the center of one of the triangles.

(answer should be 3.24 x 10^6 N/C)

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