- #1

songoku

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- Homework Statement:
- A brass plate with a thickness of 1.00 cm is placed over a copper plate with a thickness of 2.00 cm. The coefficient of thermal conductivity of brass is 100 W/m C and of copper is 400 W/m C. What is the effective coefficient of thermal conductivity for the brass-copper layer?

- Relevant Equations:
- Q/t = k . A . ΔT / d

I know k is thermal conductivity but my teacher never told me about effective coefficient of thermal conductivity. I tried googling and found:

$$k_{effective}=\frac{\Sigma{k.A}}{\Sigma A}$$

But I don't know the area to used that information. Is there another approach to do this question?

Thanks

$$k_{effective}=\frac{\Sigma{k.A}}{\Sigma A}$$

But I don't know the area to used that information. Is there another approach to do this question?

Thanks