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//Example 19.7
r=(25/2)*10^-2;//Radius of sphere (m)
V=100*10^3;//Voltage (V)
k=8.99*10^9;//Coulomb's constant (N.m^2/C^2)
Q=r*V/k;//Excess charge (C)
printf('Excess charge on the sphere = %0.2e C',Q)
//Openstax - College Physics
//Download for free at http://cnx.org/content/col11406/latest
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