Ryan is examining the internal energy of the particles in a bar of gold.
What is internal energy?
The internal energy of a thermodynamic system is the energy contained within it.
It can also be defined as the total energy within the lattice of a compound. That is, the sum of the individual energy of particles of the compound.
Thus, we can conclude that Ryan is examining the internal energy of the particles in a bar of gold.
Learn more about internal energy here: https://brainly.com/question/1370118
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