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A point charge q = +40.0 μC moves from A to B separated by a distance d = 0.180 m in the presence of an external electric field E of magnitude 275 N/C directed toward the right as in Figure below.
Microsoft Word - UNIFIED ASSIGNMENT1 12ES.docx
(a) the electric force exerted on the charge,
(b) the work done by the electric force,
(c) the change in the electric potential energy of the charge, and (d) the potential difference between A and B.
A 25-lb force acting in a vertical plane parallel to the yz plane is applied to the 8-in.-long horizontal handle AB of a socket wrench. Replace the force with an equivalent force-couple system at the origin O of the coordinate system.
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Determine (1) the vertical component of the average impulsive force exerted by the ground on his foot. (2) the horizontal frictional force. The mass of the athlete is 100kg and the coefficient of kinetic friction (μk) is 0.1.
Determine the initial potential energy
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