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The force exerted by an electric charge at the origin on a charged particle at a...

The force exerted by an electric charge at the origin on a charged particle at a point (x, y, z) with position vector r = <x, y, z> is F(r) = Kr/ |r|3 where K is a constant. Find the work done as the particle moves along a straight line from (2, 0, 0) to (2, 4, 5)

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