12 Which of the following best describes the energy change that occurs when a
stretched rubber band is
suddenly released?
(1) kinetic to potential
(2) mechanical to potential
(3) potential to kinetic
(4) kinetic to mechanical

American scientist, linus pauling, was one of many scientists racing to discover the molecular structure of dna. pauling initially thought that the molecule was a triple helix. later, james watson and francis crick unveiled their double helix model, which turned out to be an accurate description of the molecule's shape. why did watson and crick succeed when pauling failed?