Physics, 28.09.2019 11:30, ashlynsofia

What must the charge (sign and magnitude of a particle of mass 1.48 g be for it to remain stationary when placed in a downward-directed electric field of magnitude 640 n/c ? use 9.81 m/s2 for the magnitude of the acceleration due to gravity?

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What must the charge (sign and magnitude of a particle of mass 1.48 g be for it to remain stationary...