Question

a lagged composite metal bar of uniform cross sectional area 4.3×10⁻³ m² is made of iron of length 16cm and zinc of length 23cm. Heat is supplied at the free end of the
iron .The heat conducted through the bar per second is 2.7×10⁻² watt. find the difference in temperature between the free ends of the bars. If the thermal conductivities of iron and zinc are 0.14 watt per meter per kelvin and 0.082 watt per meter per kelvin respectively.

Answer 1

Answer:

495%45*6568 +3538%7865 56564761+51545+522+21212146565615531326456543219876543211234567899876543135