Coulomb's Law Calculation: Electric Force between Electron and Potassium Nucleus

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The discussion focuses on calculating the electric force between an electron and a potassium nucleus using Coulomb's Law. The formula applied is Felectric = Kc[(q1)(q2)/r^2], with values substituted for the charges and distance. The calculated electric force is -1.62 X 10^-8 N, indicating an attractive force due to opposite charges. Participants confirm the calculation is correct but remind to include units in the final answer. The importance of proper unit notation in physics calculations is emphasized.
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Homework Statement


An electron is separated from a potassium nucleus (charge 19e) by a distance of 5.2 X 10-10m. what is the electric force between these particles? (e = 1.60 X 10-19C, Kc= 8.99 X 109 N*m2/C2)

Homework Equations



Felectric= Kc[(q1)(q2)/r2]

The Attempt at a Solution



Felectric= 8.99 X 109[(19e)(-1.6 X 10-19)/(5.2 X 10-10)2]

Felectric= -1.62 X 10-8

Is this correct?
 
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Yeah looks good, don't forget your units though.
 

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