How much work must be done to bring three electrons from a great distance apart to 2.0×10−10 m from one another (at the corners of an equilateral triangle)?
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How much work must be done to bring three electrons from a great distance apart to 2.0×10−10 m from one another (at the corners of an equilateral triangle)?
Homework Answers
Workdone = change in potential energy
= Uf - Ui
= 3*k*q^2/r2 - 0
= 3*9*10^9*(-1.6*10^-19)^2/(2*10^-10)
= 3.5*10^-18 J or 21.6 eV
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