What is energy?

(not the answer from google search.)

Apossible explanation for a set of facts that can be tested by further investigation is called

An object's buoyant force and weight mean the same thing.a. trueb. false

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e