What is the potential energy of a 10-kg book that is placed on a shelf that is 2.5 meters high?

What is the difference between hypothesis, theories, laws, and observations?

Biology students used raw eggs in an experiment on tonicity and osmosis. the students put their eggs into vinegar to remove the shells. the vinegar was used to remove the shell from the raw egg. what other effect(s) did the vinegar have on the egg?

Which of the following substances most likely dissolve in water? check all that apply •paraffin