In a thundercloud there may be electric charges of +39.0c near the top of the cloud and-39.0 c near the bottom of the cloud. these charges are separated by 2.30 km. what is the electric force on the top charge? magnitude ndirection repulsive o attractive need ? read it my notes ask your teach 2 1 points serpse9 23 p007 a molecule of dna (deoxyribonucleic acid) is 2.31 um long. the ends of the molecule become singly ionized: negative on one end, positive on the other. the helical molecule acts like a spring and compresses 0.93 % upon becoming charged. determine the effective spring constant of the molecule. n/m need ? read it