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A copper rod 2 m long has a circular cro...

A copper rod 2 m long has a circular cross-section of radius 1 cm. One end is kept at `100^@C` and the other at `0^@C`. The surface is insulated so that negligible heat is lost through the surface. In steady state, find
(a) the thermal resistance of the bar
(b) the thermal current H
(c) the temperature gradient `(dT)/(dx)` and
(d) the temperature at a distance 25 cm from the hot end.
Thermal conductivity of copper is 401 `W//m-K.`

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