Two spheres are rolling without slipping on a horizontal floor. they are made of different materials, but each has mass 5.00 kg and radius 0.120 m. for each the translational speed of the center of mass is 4.00 m/s. sphere a is a uniform solid sphere and sphere b is a thin-walled, hollow sphere.

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.