1. Two objects are attached to a string which is strung over a pulley, as seen in the image to the right. The coefficient of static friction is
given as 0.21. If the object on the table is pushed to the left, solve
for the minimum and maximum applied forces that will still
maintain static equilibrium.

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.

The fuzzy edges of shadows are a result of  diffraction