Two electrons 1 and 2 move along antiparallel paths separated by a distance of \(10 \mathrm{~nm}\), traveling at speeds \(v_{1}=\) \(4.0 \times 10^{7} \mathrm{~m} / \mathrm{s}\) and \(v_{2}=7.0 \times 10^{6} \mathrm{~m} / \mathrm{s}\). What is the magnitude of the magnetic force exerted by electron 2 on electron 1 ?