An object moves in a circle of radius R at constant speed with a period LaTeX: T T
. By what factor should the period be changed so that the object's final acceleration magnitude is LaTeX: k
k
times its initial value (that is, LaTeX: a_f=k\,a
a
f
=
k
a
) where LaTeX: k=
k
=
0.553.

Wish i knew this to !

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 answer is that they are composed mostly of liquid water.