trả lời:Under the conventional sense, energy is the ability to change state or perform supernormal abilities on a physical system.

Energy is an important concept in physics, though not as fundamental as mass. The history of this concept began from classical mechanics, to electromagnetism, then underwent a revolution in identifying the concept of heat in thermodynamics and is now a modern conception of reciprocity. opposite and quantum theory.

chúc bn học giỏi

Energy comes from different sources such as oil, coal, wind, the sun, water, natural gas and even manure and it exists everywhere in the world. Energy can appear as such forms like: electricity, or so. Any thing even the smallest things like fibre and sources of calories in your body also.