The ends of a cylindrical steel rod are maintained at two different temperatures.The rod conducts heat from one end to the other at a rate of 10 cal/s.At what rate would a steel rod twice as long and twice the diameter conduct heat between the same two temperatures?
A) 5 cal/s
B) 10 cal/s
C) 20 cal/s
D) 40 cal/s
E) 80 cal/s
Correct Answer:
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