Energije
Energije is a broad concept in physics and engineering that refers to the capacity to do work or to cause change. It appears in many forms, including kinetic energy, potential energy, thermal energy, chemical energy, electrical energy, radiant energy, and nuclear energy. Energy can be transformed from one form to another, but the total amount of energy in an isolated system is conserved (the conservation of energy).
The SI unit is the joule, but energy is commonly expressed in kilowatt-hours when referring to electrical
Societal energy use is described by an energy balance, showing how energy is produced, transformed, and consumed.
In physics, energy is a conserved quantity central to mechanics and thermodynamics, underpinning countless phenomena and