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I have to find the rate of heat flow through a cross-section of the rod in steady state as shown in the figure.Thermal conductivity of the rod is K.

I have used a $(dollar) sign for theta.

The formula i know is ΔQ/Δt = [KA($2 - $1)] /x

where ΔQ/Δt is the heat current,where A is area of cross section and x is the thickness.

since the area of cross section varies.i think integration will be used.....

can ANYBODY GUIDE ME THROUGH..??

[NOTE - THE FIGURE READ THAT $2 > $2 , which is a mistake and the correction is $2 > $1.]

Thanks,

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# Homework Help: Heat conduction

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