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26 July, 16:28

A strip of copper metal is riveted to a strip of aluminum. the two metals are then heated. the coefficient of linear expansion of aluminum is greater than that of copper. what happens?

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  1. 26 July, 18:25
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    We can base this on the equation of thermal expansion.

    ΔL = L₀αΔT

    where

    ΔL is the expansion of length upon heating

    L₀ is the initial length

    α is the coefficient of linear expansion

    ΔT is the temperature difference

    So, if α for Aluminum is greater than α for Copper, then after heating, aluminum would be longer than copper.
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