How Does Box Size Affect Kinetic Energy Calculations in Gas Molecules?

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SUMMARY

The discussion centers on the relationship between box size and kinetic energy calculations in gas molecules, specifically referencing Newton's second law. The box length, denoted as L, is crucial for determining the time a molecule takes to collide with the wall, which directly influences its velocity change. The inquiry raised pertains to whether the box size should be comparable to the force field size of the atom or molecule involved in the kinetic energy calculations.

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  • Understanding of Newton's second law of motion
  • Familiarity with kinetic energy concepts in physics
  • Basic knowledge of molecular dynamics simulations
  • Awareness of atomic force fields and their implications
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  • Research the implications of box size in molecular dynamics simulations
  • Study the application of Newton's second law in gas molecule behavior
  • Explore atomic force fields and their effects on kinetic energy calculations
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Physicists, chemists, and students studying molecular dynamics, as well as researchers focusing on kinetic energy and gas behavior in confined environments.

majid_mahjoori
In definition and proof of kinetic energy, it uses the second law of Newton. The length of the box is L and it uses this length to define the time of applying the force on the wall. Actually this time should be only time that molecule reaches to the wall and changes its velocity.

My question is:

is this length of box is considered as small as the size of force field of the Atom or Molecule?
 
Physics news on Phys.org
Which box?

I think there is some context missing.
 

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