You work for a company that specializes in electron beam-impact deposition. This apparatus uses a tightly focused electron beam to deposit atoms on a surface with very fine spatial resolution. You are given the job of calculating the maximum possible deflection of the electron beam when the random magnetic fields in the laboratory are reduced (by shielding) to a maximum value of 0.15 mGauss. The electrons are accelerated from rest through 20 kV and the path length is 3.6 cm. If the magnetic fields were later discovered to be twice as large, what modified path length would yield the same deflection as you originally calculated