First thermodynamics and heat
Understand the Problem
The question seems to be about the concepts related to the first law of thermodynamics and heat transfer. We will explore the principles of energy conservation, the relationship between heat and work, and how energy is transferred in various processes.
Answer
ΔU = Q − W, the change in internal energy equals heat added minus work done.
The first law of thermodynamics states that the change in internal energy of a system equals the net heat transfer into the system minus the net work done by the system. Mathematically, it's represented as ΔU = Q − W.
Answer for screen readers
The first law of thermodynamics states that the change in internal energy of a system equals the net heat transfer into the system minus the net work done by the system. Mathematically, it's represented as ΔU = Q − W.
More Information
The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic systems. It emphasizes that energy can change forms (e.g., heat to work) but the total quantity of energy remains constant.
Tips
Common mistakes include confusing the signs for heat and work. Heat added to a system is usually considered positive, while work done by the system is negative.
Sources
- The First Law of Thermodynamics - Internal Energy, Work, and Heat - chem.libretexts.org
- First law of thermodynamics - Wikipedia - en.wikipedia.org
- What is the first law of thermodynamics? (article) - Khan Academy - khanacademy.org
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