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A point charge of -2 micro-coulomb is located at the point (-5,-4). Calculate the
the electric field at the point (2,-2) due to this charge. Since the electric field is a
vector, write as your answer only the Y-component of the electric field vector.
(use correct sign for the Y component, i.e. if the E-field is pointing up, write it as a
positive number, and if it is pointing down, write it as a negative number).

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