Please provide an answer: You are working in a biology lab during your summer break. Your supervisor asks you to perform an experiment to find the effective spring constant $($in N$/$m$)$ of a partial molecule of DNA $($deoxyribonucleic acid$).$ You perform experiments and find that a single straight portion of a DNA molecule is $2\mathrm{.}22$m long. You then perform an activity that charges the ends of the molecule; each end becomes singly ionized: negative on one end, positive on the other. After the ends are charged, the molecule shrinks by $1\mathrm{.}48\%$ of its length.