Two ions having charge +e and -e are 4.0*10^-10m apart. Calculate the potential energy of the system.
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potential energy is given by kq1q2/r
=9*10^9*1.6*10^-19*1.6*10^-19/4*10^-10
=5.76*10^-19
=9*10^9*1.6*10^-19*1.6*10^-19/4*10^-10
=5.76*10^-19
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