Science(heat)

2008-09-04 3:20 am
why溫度高的物質與溫度低的物質combine之後...兩者的溫度會even,
why會由溫度高的物質輸送一些份子比溫度低的物質?(詳細)

回答 (2)

2008-09-04 4:45 am
✔ 最佳答案
Q: why溫度高的物質與溫度低的物質combine之後...兩者的溫度會even

Heat will flow whenever there is a temperature difference, just similar to the flow of water when there is a pressure difference.

When two substances of different temperature are brought together, the difference in temperature causes heat to flow from the substance of higher temperature to substance of lower temperature until the temperatures of the two objects are the same. Then heat ceases to flow.
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Q:why會由溫度高的物質輸送一些份子比溫度低的物質?(詳細)

It is NOT correct. Molecules of the substances at higher temperature will NOT move to the substance with lower temperature. It is the vibrations of the molecules have changed.

Molecules vibrates more vigorously in substances at higher temperature than molecules in substance at lower temperature. The transfer of heat energy from the high temperature substance to the low temperature substance will balance the vibrations of all the molecules, resulting in all molecules in the two substances be of the same vibrating.
2008-09-04 8:27 am
因為有TEMPERATURE different 所以有HEAT Transfer
因為有HEAT Transfer ,heat是一種能量
*AVERAGE ke反映temperture
即temperture高d average ke 高d
透過粒子運動將能量transfer
average ke 高d 震得快d 試想想10秒
粒子震得快撞到一d震得慢的粒子 是ke 的轉移
試幻想 你彈粒珠仔出去撞到一粒不動的珠會點
粒不動的珠會gain ke energy 動

現在有一推珠在一個框框內 粒子震來震去 最終粒子以勻速震動
THEN 兩者的溫度會even


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