Heat Transfer Questions & Answers | |
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Well no, because the rate of change of the energy is not always zero even if the matter is at rest. It can change because of heat transfer or heat generation.
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I think it's better if you sleep over it and look again carefully into your logic and algebra tomorrow when your mind is more fresh..
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Well, it's unlikely a fin will reduce the heat transfer. I guess this could happen exceptionally if there is a (very large) contact resistance between the fin and the base and if the fin is rather thick.. But then the loss of heat transfer will not be because of the fin itself but because of the contact resistance. 1 point bonus.
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See reply to previous question here: |
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Yes, You need to also find the cable temperature, but such answer is not listed.
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$\pi$ |