pls help asap?

2020-09-07 1:44 pm
Which of the following is not a key characteristic of thermal equilibrium? 

1) two objects must be in contact with each other
2) they must be at the same temperature
3) There must be no net thermal energy transfer
4) They must have different temperature

回答 (4)

2020-09-07 1:51 pm
The answer: 4) They must have different temperature

When there is difference in temperature, heat will flow from the object at a high temperature to that at a low temperature. The system is not in thermal equilibrium.
2020-09-08 1:03 am
 4. They must have the same temperature.
2020-09-07 9:38 pm
Heat flows if the temperature are different. It is not a equilibrium. 4 is a wrong answer.
2020-09-07 7:40 pm
4) They must have different temperature !!! This is basic condition for a thermal offset !!


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