Heat flows at a rate of Q/t from a hot object to a cold object through...
Heat flows at a rate of Q/t from a hot object to a cold object through some material that has a thickness of d and a surface area of A.
If the surface area of the material is increased to 2A and the thickness is increased to 4d then what rate does the heat flow from the hot object to the cold object now?
[You may assume that the hot and cold object are unchanging in temperature.]
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Heat flows at a rate of Q/t from a hot object
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