An electric heater (P=200 W) is inside a box (length of each side=20 cm, thickness of each side=1 cm). Thermal equilibrium is reached. Afterwards the temperatures of the outer walls and the inner walls are, respectively, 20 C and 60 C.
What is the heat flux from the box? What is the thermal conductivity of the box's material?
I'm sure this is a piece of cake for some of you. I've no idea what to do. So..what do I do? I assume this is about Fourier's law.
What is the heat flux from the box? What is the thermal conductivity of the box's material?
I'm sure this is a piece of cake for some of you. I've no idea what to do. So..what do I do? I assume this is about Fourier's law.
Physics homework
- 29/09/2011 06:34:01 PM
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An interesting question... too bad it's been seven years since I took Thermo.
- 29/09/2011 07:00:19 PM
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Well...
- 29/09/2011 08:18:10 PM
376 Views
Yessss. The answer's correct. Thank you thank you thank you *NM*
- 29/09/2011 09:25:52 PM
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no he has no idea what he is talking about and just made all of that up
- 29/09/2011 09:44:21 PM
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