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21 June, 10:22

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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  1. 21 June, 11:19
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    What is the magnitude of an electric field in which the electric force on a proton is equal in magnitude to its weight?

    Use 1.67*10-27 kg for the mass of a proton, 1.60*10-19 C for the magnitude of the charge on an electron, and 9.81 m/s^2 for the magnitude of the acceleration due to gravity.
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