How many electrons have to be added to 1 milligram metal sphere such that another +1C...

How many electrons have to be added to 1 milligram metal sphere such that another +1C charge located 19 mm above the sphere will be able to hold that in the air?[Assume g=10m/s^2].

Expert Solution

in this we need to balance he force of attraction between the +1C charge and added electrons with the weight on the metallic sphere, so that the shpere can be balanced in the air. charge on 1 electron= -1.6*10^-19C and weight of 1 electron= 9.1*10^-31kg

genius_generous answered 2 years ago

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