This document discusses thermodynamics and the first law of thermodynamics. It defines thermodynamics as the branch of science dealing with relations between heat and other forms of energy. The first law states that energy can neither be created nor destroyed, only changed from one form to another, expressed as the change in internal energy equals heat plus work. An example is given of turning on a light, which seems to produce energy but actually converts electrical energy. The differential form of the first law is also mentioned.

1. Thermodynamics

2. Name: Naveed Qurban
Dept.: BS – Telecommunications
Student Id: 1428 - 215204
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3. Differential Form of 1st
Law of
Thermodynamics

4. What is Thermodynamics?
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5. “
➝ The branch of science
that deals with the
relations between heat
and other forms of
energy.
➝ These energies can be
mechanical, electrical or
chemical.
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6. Laws of Thermodynamics
➝ 1st Law of Thermodynamics
➝ 2nd Law of Thermodynamics
➝ 3rd Law of Thermodynamics
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7. 1st Law of
Thermodynamics
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8. The energy can neither be created nor
destroy but can only changes its form
from one to another.
ΔU = q + w
ΔU = Internal Energy
q = Heat
w = Work
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9. Example:
Turning on a light would seems
to produce energy, but in real it
is the electrical energy that is
converted.
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10. Differential Form

11. Differential Form
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12. Example
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