Determine the largest intensity w of the uniformloading that can be applied to the frame without causingeither the average normal stress or the average shear stressat section b–b to exceed s = 15 MPa and t = 16 MPa, respectively. Member CB has a square cross section of30 mm on each side.

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.