LAW OF CONSERVATION OF ENERGY
Answers
Answer:energy can neither be created nor destroyed but only can be changed from one form to another
Example:in a battery, chemical energy is converted to electrical energy
Energy can neither be created nor be destroyed, it remains conserved.
According to Einstein's mass-energy equivalence principle, E = mc², mass and energy are equivalent. A mass m can be destroyed to give energy mca, so a process may not conserve mass but the total energy will be conserved, as mass is just one form of energy that can be transformed to other forms. This is the basis of energy released in nuclear reactors and nuclear bombs. So, the law of conservation of mass was included in the law of conservation of energy itself. However, in a chemical reaction, atoms are simply rearranged, the total mass of the reactants is the same as the total mass of the products. This law remains valid across all domains of nature. Consider free fall of a body under gravity. This is motion under an external conservative force. Here, total mechanical energy remains constant.