What is the kinetic energy of the -6 μC charge after it has moved to a distance of 12.4 cm away from the 4.8 μC charge?

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter19: Electric Forces And Electric Fields
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What is the kinetic energy of the -6 μC charge after it has moved to a distance of 12.4 cm away from the 4.8 μC charge?

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According to the law of conservation of energy , energy can neither be created nor destroyed but can only be converted from one form to another . Thus the kinetic energy is calculated by using the formula E=kq1q22r , where k=9×109 Nm2 /C2 is the Coulomb's law , q1=-6×10-6 C and q2=4.8×10-6 C are the charges and r=0.124 m is the distance between the charges .

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