Explain on the basis of the molecular structure of a substance the heating of a spoke immersed in hot water.

If at first the water is hot and the spoke is cold, then the average kinetic energy of water molecules was greater than the average kinetic energy of cold metal particles. Gradually, the water molecules will transfer some of their energy to the metal, and their temperatures will equalize. Thus, there will be a change in the internal energy of the water and the spoke.



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