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//Example 15_2
clc();
clear;
//To find the force on the center charge
k=9*10^9 //Units in N meter^2/C^2
q1=4*10^-6 //Units in C
q2=5*10^-6 //Units in C
r1=2 //Units in meters
r2=4 //Units in meters
q3=6*10^-6 //Units in C
f1=(k*q1*q2)/r1^2 //Units in N
f2=(k*q2*q3)/r2^2 //Units in N
f=f1-f2 //Units in C
printf("The force on the center charge is=%.5f N",f)
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