Question

How far apart the electrons be if the force each exerts on the other is equal to the weight of the electron

Answer 1

Oie  Hello !!! 
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Here given to us . 

Mass on electron = 9.109 X  $10^{-31}$ Kg

Charge on each electron = 1.6 x $10^{-19}$  C

now , 
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F= $\frac{ k . e- . e- }{ r^2 }$

mg = 9 x 10^9  x  1.6 x 10^-19 x 1.6 x10^-19 / r^2

9.109 x 10^-31 x 9.8 = 9 x 10^9  x  1.6 x 10^-19 x 1.6 x10^-19 / r^2

r² = 9 x 10^9  x  1.6 x 10^-19 x 1.6 x10^-19  / 9.109 x 10^-31 x 9.8  

r² = 2478.77 

r= √2478.77 

r=49.78 m

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Hope it helps you ^ _ ^ 

Answer 2

Explanation:

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