Energy

Energy is a fundamental concept in physics, representing the capacity to do work or produce change in a system. It exists in various forms, including kinetic energy (the energy of motion), potential energy (stored energy based on position), thermal energy (related to temperature), chemical energy (stored in chemical bonds), and nuclear energy (released during nuclear reactions). Energy can be transferred or transformed from one form to another but cannot be created or destroyed, in accordance with the law of conservation of energy. In practical terms, energy powers all physical processes, natural phenomena, and human activities, making it a critical factor in science, engineering, and everyday life.