Wolfram Computation Meets Knowledge

Wolfram Formula Repository (Under Development)

First Law of Thermodynamics

The first law of thermodynamics states that the change in the internal energy of a closed system is equal to the amount of heat supplied to the system minus the amount of work done by the system on its surroundings.

The change in internal energy equals the heat transferred minus the work extracted.

Formula

QuantityVariable["Δ​E", "Energy"] == QuantityVariable["Δ​Q", "Heat"] - QuantityVariable["Δ​W", "Work"]

symbol description physical quantity
Δ​E change in internal energy "Energy"
Δ​Q heat transferred "Heat"
Δ​W work extracted "Work"

Forms

Examples

Get the resource:

In[1]:=
ResourceObject["First Law of Thermodynamics"]
Out[1]=

Get the formula:

In[2]:=
FormulaData[ResourceObject["First Law of Thermodynamics"]]
Out[2]=

Use some values:

In[3]:=
FormulaData[ ResourceObject[ "First Law of Thermodynamics"], {QuantityVariable[ "\[CapitalDelta]\[InvisibleSpace]Q","Heat"] -> Quantity[400, "Joules"], QuantityVariable["\[CapitalDelta]\[InvisibleSpace]E","Energy"] -> Quantity[100, "Joules"]}]
Out[3]=

Source Metadata

  • Creator:
  • Date: 1850

Publisher Information