First law of thermodynamics

Here is the First Law of Thermodynamics in 10 lines:

1. The First Law of Thermodynamics is based on the principle of energy conservation.

2. It states that energy can neither be created nor destroyed.

3. Energy can only be transferred or converted from one form to another.

4. The law is expressed as: ΔU = Q − W.

5. Here, ΔU is the change in internal energy of the system.

6. Q represents the heat added to the system.

7. W represents the work done by the system.

8. If heat is added, the internal energy increases.

9. If work is done by the system, internal energy decreases.

10. Example: In an engine, heat energy is converted into mechanical work.