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Thermal equilibrium happens when :?

1. all the materials in a system are at the same temperature

2. all of the heat forces are balanced

3.all molecules in a room are moving in the same speed

4. all materials in a system have the same amount of heat energy

4 Answers

Relevance
  • Todd
    Lv 7
    6 years ago

    2

  • Jan
    Lv 7
    6 years ago

    1. all the materials in a system are at the same temperature

  • 6 years ago

    Hello Megan Rose, first one is the correct one

  • 6 years ago

    Materials really

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