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State the First law of thermodynamics - Physics

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Short Note

State the First law of thermodynamics.

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Solution

The first law of thermodynamics:

The First Law of Thermodynamics states that heat is a form of energy, and thermodynamic processes are therefore subject to the principle of conservation of energy. This means that heat energy cannot be created or destroyed. It can, however, be transferred from one location to another and converted to and from other forms of energy.

The equation for the first law of thermodynamics is given as;

ΔU = q + W

Where,

  • ΔU = change in internal energy of the system.
  • q = algebraic sum of heat transfer between system and surroundings.
  • W = work interaction of the system with its surroundings.
Concept: Chemical Thermodynamics and Energetic - First Law of Thermodynamics
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