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When you put your bare back (Tbody= 37° C) against an aluminum park bench at temperature...

When you put your bare back (Tbody= 37° C) against an aluminum park bench at temperature 15° C, what is the rate of heat transfer from you into the metal bench? The bench's thickness is 5 mm and the thermal conductivity of aluminum is 220 J/s* m* °C. At what temperature will that bench not feel hot or cold when you put your bare back against it? Explain.

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