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An object with a charge of -4.0 μc and a mass of 1.4×10−2 kg experiences an upward electric force, due to a uniform electric field, equal in magnitude to its weight. part a find the magnitude of the electric field. express your answer using two significant figures.
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An object with a charge of -4.0 μc and a mass of 1.4×10−2 kg experiences an upward electric force, d...
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