A Brass Plate with a Thickness of 1

A brass plate with a thickness of 1.00 cm is placed over a copper plate with a thickness of 2.00 cm. Take the thermal conductivity of brass to be 100 W/m °C and that of copper to be 400 W/m °C. What is the effective thermal conductivity for the brass-copper layer?

A) 150 W/m °C
B) 200 W/m °C
C) 250 W/m °C
D) 300 W/m °C
E) 350 W/m °C

Correct Answer:

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