Dee Liverance shoots an arrow out of her bow. The string is stretched 0.6 m, and when released the arrow leaves the bow in 0.12 s. What is the acceleration of the arrow?

Pe = 1/2k(x)^2  and .05n/m = .05x10^-9m = x 

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.