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sgstudent
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Homework Statement
A composite rod is made if copper and wood joined together. a piece of paper is filled in close contact with both rods bear the junction of wood and copper. The rod is passed several times through a bunsen flame. What will be observed and why?
A: the portion of the paper in contact with the copper chars first because copper is a better conductor of heat.
B: the entire paper chars ay the same time because the rate of heat loss through copper and wood is equal.
C: the paper char first where is covers the wood because wood is not a good conductor of heat
D: the paper chars first where it covers the copper because wood is w bad conductor of heat.
Homework Equations
Q=mc(dT)
The Attempt at a Solution
The answer is C but I don't quite get it. Since copper has a lower c (mass is constant) so won't the dT be higher than of the wood since wood has a higher c than copper? So shouldn't the wood be cooler than copper? Thanks