A DNA molecule (deoxyribonucleic acid) is 2.35 ?m long. The ends of the molecule be-come singly ionized so that there is ?1.60×10^?19 C on one end and +1.60 × 10^?19 C on the other. The helical molecule acts as a spring and compresses 1.50 percent upon becoming charged.
Find the effective spring constant of the molecule. The value of Coulomb’s constant is 8.98755 × 109 N · m2/C2 and the acceleration
due to gravity is 9.8 m/s2. Answer in units of N/m