First law of thermodynamics
Understand the Problem
The question is asking for information regarding the first law of thermodynamics, which relates to the principles of energy conservation in thermodynamic processes.
Answer
The first law states that energy cannot be created or destroyed, only transferred or converted.
The first law of thermodynamics states that energy cannot be created or destroyed; it can only be transferred or changed from one form to another. This is often expressed in the equation ΔU = Q - W, where ΔU is the change in internal energy, Q is the heat added to the system, and W is the work done by the system.
Answer for screen readers
The first law of thermodynamics states that energy cannot be created or destroyed; it can only be transferred or changed from one form to another. This is often expressed in the equation ΔU = Q - W, where ΔU is the change in internal energy, Q is the heat added to the system, and W is the work done by the system.
More Information
The first law of thermodynamics reflects the principle of conservation of energy, meaning that the total energy of an isolated system remains constant. Energy transitions occur in forms such as kinetic, potential, or thermal energy.
Tips
A common mistake is to misunderstand the sign conventions in the equation ΔU = Q - W, where Q is positive if heat is added to the system, and W is positive if work is done by the system.
Sources
- First law of thermodynamics - Wikipedia - en.wikipedia.org
- First Law of Thermodynamics - grc.nasa.gov
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