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# How is the 1st law of thermodynamics related to the conservation of energy?

Updated: 8/9/2023 Wiki User

12y ago

By the first law of thermodynamics, energy is conserved - i.e. the sum of the useful work and the energy lost to heat will equal the energy you started with.

The second law states that you will never get 100% energy efficiency. Lincoln Wolf

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7y ago

The first law of thermodynamics is the law of conservation of energy. They are the same thing.

The first law of thermodynamics states that the energy within a closed system is constant regardless of changes in that system. The law of conservation of mass and energy states that total mass and energy (in a closed system) will always remain the same despite changes inside of the system.   Wiki User

13y ago

Better rephrase the question. Thermodynamics is a branch dealing with the heat energy given to a system and the increase in its internal energy and work performed by the system. Where as, the mass which is also defined as quantity of matter is not related so directly to the quantity of heat energy given to the system.   Wiki User

7y ago

As stated by the expert:

The First Law of Thermodynamics IS the Law of Conservation of Energy.

The Second Law of Thermodynamics is not directly related; however, it provides additional restrictions, as to what can, and what cannot, be achieved.   Wiki User

7y ago

The First Law of Thermodynamics IS the Law of Conservation of Energy.The Second Law of Thermodynamics is not directly related; however, it provides additional restrictions, as to what can, and what cannot, be achieved.   Wiki User

12y ago

The First Law of Thermodynamics is the Law of Conservation of Energy. Just different names for the same thing.   Wiki User

10y ago

Because energy can be converted to mass and vice-versa in nuclear reactions such that e=mc2 therefore mass and energy can be considered to be the same   Wiki User

11y ago

It is the same law.   Earn +20 pts
Q: How is the 1st law of thermodynamics related to the conservation of energy?
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Still have questions?  Related questions

### Of thermodynamics is a restatement of the law of conservation?

The 1st Law of thermodynamics is a restatement of the law of conservation of energy.

### Which law of thermodynamics is the conservation of energy applied to thermal systems?

Conservation of energy is the 1st law of thermodynamics.

### What is the other name for the 1st law of thermodynamics?

conservation of energy law .

### Which would mean that the energy in an isolated system would remain constant law of conservation of matter 1st law of thermodynamics second law of thermodynamics or the atomic theory of matter?

The first law of thermodynamics states that the energy of an isolated system is constant.

### Law that states that energy cannot be created or destroyed?

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.

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### Is entropy closely related to the 1st law of thermodynamics?

It is related to the 2nd law of thermodynamics

### State and explain first law of thermodynamics?

The first law of thermodynamics is also called the law of conservation of energy.it may be stated as: 1st Statement: in this universe energy can neither be created nor destroyed though it may change from one form to another.

### Which law of thermodynamics states that when two objects of different temperature are in contact heat energy will flow from the hotter to the cooler object?

newton's 1st law in thermodynamics.....

### Thermodynamics first law?

The first law of thermodynamics states that in any thermodynamic process, when heat Q is added to a system, this energy appears as an increase in the internal energy stored in the system plus the work done by the system on it's surroundings. or to shorten that, energy can neither be created nor destroyed, but it can change from one form to another i hope this helped ^^

### What is lost during the Transformation of energy from potential to kinetic?

Nothing. 1st Law of Thermodynamics: energy cannot be created or destroyed, it can only change form.

### As water spontaneously freeze at room temperature the floor becomes very slightly cooler which law of thermodynamics has been violated?

That would significantly violate the second law of thermodynamics. For water to spontaneously freeze at room temperature, there would have to be something colder than the freezing point to absorb the energy coming out of the water. If the floor also became cooler, then it could not be absorbing energy. If you had ONLY the water and the floor, then this would also violate the 1st law - conservation of energy.