Question: Current Attempt in Progress Your answer is partially correct. A very long cylindrical rod is attached at one end to a heated wall and transfers

Current Attempt in Progress

Your answer is partially correct.

A very long cylindrical rod is attached at one end to a heated wall and transfers heat by convection to a cold fluid. If the diameter of the rod is

3

times the diameter of the original rod,by what percentage will the heat transfer increase or decrease. If instead the rod is made of a material with thermal conductivity,

k,

that is

4

times the thermal conductivity of the original rod, by what percentage would the rate of heat loss increase or decrease?

By what percentage does the heat transfer change with the diameter change?

q_{D} =, %

Current Attempt in Progress Your answer is

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