A particle carrying charge \(+10.00 \mathrm{nC}\) sets the origin of a rectangular coordinate system. Taking the electrostatic potential to be zero at infinity, locate the distance from the origin of the equipotential surfaces at \(20 \mathrm{~V}, 40 \mathrm{~V}, 60 \mathrm{~V}\), \(80 \mathrm{~V}\), and \(100 \mathrm{~V}\). Are these surfaces equally spaced?