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The law of conservation of energy (also known as the 1st law of thermodynamics) states that energy can neither be created nor destroyed.

There is one caveat to that, however.

If you include the famous equation E=M Csquared (couldn't get the superscript to show up there), then mass and energy are conserved, not just energy. In a fusion reaction, for example, the "mass" posessed by the nuclear potential energy released is large enough to represent a loss of mass to the original material (also known as the "mass defect"). This nuclear potential energy normally shows up as included in the mass of the system before the reaction so it appears that energy has been created. The analogous release of electrical energy in some chemical reactions is too small to create a measurable mass defect.

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Related Questions

Can energy be destroyed and created?

no energy cannot be created nor destroyed but it can change form


What law states that energy cannot be created or destroyed?

Law of energy conservation. It shows that energy cannot be created or destroyed


What was the foundation of the law of conservation of energy?

Energy cannot be created or destroyed.


What energy can be?

According to the Law of Conservation of energy, energy cannot be created or destroyed.


What is the priniciple that says energy cannot be created or destroyed?

The Principle of Conservation of Energy.


Energy cannot be created or destroyed what law is this?

This is the Law of Conservation of Matter.


Can the law of conservation of energy be violated?

No, the law of conservation of energy states that energy cannot be created or destroyed, only transferred or transformed. It cannot be violated.


What is a nonexample of conservation of energy?

A nonexample of conservation of energy would be a situation where energy is created or destroyed without any explanation in a system. This violates the principle of conservation of energy, which states that energy cannot be created or destroyed, only transferred or transformed.


If energy cannot be destroyed can it be created?

Energy cannot be created or destroyed, considering E=mc^2. Conservation of energy allows for the transformation of energy to different forms. Transformation is not considered creating or destroying, but transforming.


This law states that energy or mass cannot be created or destroyed?

law of conservation of energy and mass


The conservation of energy explains that energy?

The law of conservation of energy states that all energy in the universe is conserved. It can not be created nor destroyed, but it can be interchanged between mechanical and non-mechanical energy.


What law states that energy is never created or destroyed?

The law that states energy is never created or destroyed is the First Law of Thermodynamics, also known as the Law of Conservation of Energy. This law states that energy can be transferred or transformed, but it cannot be created or destroyed.