為什麼良好既導熱體散失熱力的速率高???????/
thxxtxhxththxthx!!
easy phy f3 入黎睇睇
2008-04-06 9:44 pm
回答 (2)
2008-04-11 2:13 am
Heat lost=Heat gained
良好既導熱體吸熱快
Thus,良好既導熱體散失熱力快
良好既導熱體吸熱快
Thus,良好既導熱體散失熱力快
2008-04-07 6:10 am
Heat conduction in a subatance is due to the presence of free electrons.
When a substance is heated, most of the heat energy is taken up by the free electrons in the substance. The vibrational energy of these free electrons will increase and the increased vibration will transmit through these electrons to other parts of the substance, causing electrons there to vibrate more. This is the process of conduction, which carries the heat away from the substance.
As metals contain plenty of free electrons, metals are generally good conductors of heat.
When a substance is heated, most of the heat energy is taken up by the free electrons in the substance. The vibrational energy of these free electrons will increase and the increased vibration will transmit through these electrons to other parts of the substance, causing electrons there to vibrate more. This is the process of conduction, which carries the heat away from the substance.
As metals contain plenty of free electrons, metals are generally good conductors of heat.
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