What must the charge (sign and magnitude) of a particle of mass 1.42 g be for it to remain stationary when placed in a d

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answerhappygod
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What must the charge (sign and magnitude) of a particle of mass 1.42 g be for it to remain stationary when placed in a d

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What must the charge (sign and magnitude) of a particle of mass1.42 g be for it to remain stationary when placed in adownward-directed electric field ofmagnitude 700 N/C ?
What is the magnitude of an electric field in which the electricforce on a proton is equal in magnitude to its weight?
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