I am having difficulty with this homework question. I am not even sure whether to start. Question: A molecule of DNA lies along a straight line. It is 1.061 micrometers long. The ends of the molecule become singly ionized; negative on one end, positive on the other. The helical molecule acts as a spring and compresses 0.6% upon becoming charged. The Coulomb constant is 8.99 x 10^9 N*m^2/C^2. Determine the effective spring constant of the molecule. Take into account the compressed length when calculating the distance between the ends of the molecule. Answer in units of N/m. Any help would be appreciateid.