how far apart the two electrons be if the force between them equals to the weight of an electron
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Negleting gravitational attraction from Coulomb's law the force F between the 2 electrons is f=k.(q^2)/d^2 where d is their distance apart and q the electronic charge.
Thus F =mg where m is the electron's mass and g the acceleration of gravity = 9.81 m/s^2.
Or k.(q^2)/d^2 =mg ==> d^2 = k.(q^2)/mg ==> d = sqrt(k.(q^2)/mg) k =Coulomb's contant
Thus F =mg where m is the electron's mass and g the acceleration of gravity = 9.81 m/s^2.
Or k.(q^2)/d^2 =mg ==> d^2 = k.(q^2)/mg ==> d = sqrt(k.(q^2)/mg) k =Coulomb's contant
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