Two carts move in the same direction along a frictionless air track, each acted on by the same constant force for a time interval δt? cart 2 has twice the mass of cart 1, which one of the following statements is true? cart 2 has the greater change in momentum cart 1 has the greater change in momentum. the changes in momenta depend on the initial velocities. each cart has the same change in momentum.

2. they have negligible mass.

The best answer is (a) which is universal law is in effect at all times. it is constantly at play in everything we do and governs our lives. it is also important to note that universal law applies to not only everything on earth, but everything in the universe as well, which is another reason why it is in effect at all times.

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.