Calculate the work done by a force F = -...

Calculate the work done by a force F = `-5hati+hatj+7hatk N` when its point of application moves from point `(-2hati-6hatj+hatk)m` to the point `(hati-hatj+10hatk)m`.

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Work done by a force F=(hati+2hatj+3hatk) acting on a particle in displacing it from the point r_(1)=hati+hatj+hatk to the point r_(2)=hati-hatj+hat2k is

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