The piece has more thermal energy is Piece B, because its particles move faster.
This is known to be a type of power that is created by atomic and molecular particle movement that is present within a substance/system.
The piece that has a greater thermal energy is the piece that is said to have higher temperature that is Piece B has particles do move faster.
See options below
Piece A, because its particles move slower
Piece B, because its particles move faster
Piece A, because its particles move faster
Piece B, because its particles move slower
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