You must be referring to the two Laws of Thermodynamics. Stated in terms of energy:
1. The First Law of Thermodynamics is the Law of Conservation of Energy, meaning that energy can not be created or destroyed.
2. However, useful energy is continuously being converted into unusable energy. This is irreversible. This is the Second Law of Thermodynamics.
This probably refers to the Second Law of Thermodynamics. There are several way to state it; one form - directly related to energy - basically says that useful energy is continuously being converted to unusable energy. Thus, the amount of useful energy in the Universe gradually decreases.
The law of Conversation of Energy
No The 1st law only addresses the conservation of energy in an isolated system. It puts no limits on the transformation of that energy from one form to another so long as the total energy remains unchanged. The second law deals with what happens when energy changes from one form to another. One way to look at it is that any time you use energy, you wind up "losing" some the useful energy to heat. The energy isn't really "lost", it just has changed into a form that is generally less useful, i.e. harder to use for work (remember - work is also a form of energy).
Law of Conservation Energy(:
You can't get ahead (1st law - conservation of energy - you can't get more energy out than you put in) You can't even break even (2nd law - 100% efficiency is not possible - some energy will always be lost as heat to the surroundings, thus increasing the overall entropy of the universe) You can't get out of the game (no real process is reversible)
The Law of Conservation of Energy states that the total amount of energy remains constant - energy will not be created or destroyed.
The closest law is the Second Law of Thermodynamics. Note that not necessarily "most" energy will be converted to unusable heat, but it is almost inevitable that some will.
Newton's 2nd law of motion.
law of conservation of energy
The law of Conversation of Energy
Law of conservation of energy. Energy can't be created or destroyed is the basic statement of the law of conservation of energy.
No The 1st law only addresses the conservation of energy in an isolated system. It puts no limits on the transformation of that energy from one form to another so long as the total energy remains unchanged. The second law deals with what happens when energy changes from one form to another. One way to look at it is that any time you use energy, you wind up "losing" some the useful energy to heat. The energy isn't really "lost", it just has changed into a form that is generally less useful, i.e. harder to use for work (remember - work is also a form of energy).
The law of Conservation of Energy. Actually, that law has been superceded now by a slightly different one. Recently (maybe 100 years ago) it was learned that energy can become mass and mass can become energy. So the law had to be modified to say that the total combination of mass and energy can't be created or destroyed.
Energy flows from one type toanother following the laws of thermodynamics. The 1st law states that no energy is created or destroyed, and the 2nd law states that energy will move from an area of high concentration to an area of low concentration or that the entropy of a closed system will remain constant or diminish.
the law of conservation of energy
Law of Conservation of energy
Scientists call this law the law of conservation of matter
That law is known as the Law of Conservation of Energy. It is also known as the First Law of Thermodynamics.