Assume all temperatures to be exactA steel cylinder of radius 4.5 and length 3.3
is placed in end-to-end thermal contact with a copper cylinder of the same dimensions.
If the free ends of the two cylinders are maintained at constant temperatures of 92 ∘C
(steel) and 13 ∘C(copper), how much heat will flow through the cylinders in 20 min? Assume k steel=46J/(m⋅s⋅∘C)and k copper=390J/(m⋅s⋅∘C).
Express your answer using two significant figures.
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