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At a certain temperature T1, a (1.2324x10^2) mm rod of a copper alloy containing (3.04x10^1) at%...

At a certain temperature T1, a (1.2324x10^2) mm rod of a copper alloy containing (3.04x10^1) at% Ni has a resistivity of (2.725x10^1) x 10-8 Ω-m.


For pure copper, the resistivity at 0°C is 1.58 x 10-8 Ω-m and the change in resistivity per degree increase in temperature is 6.50 x 10-11 (Ω-m)/°C. The value of A for nickel in copper is 1.18 x 10-6 Ω-m and the coefficient of thermal expansion of this alloy is (1.6947x10^1) x 10-6 (°C)-1.


If the resistivity of this alloy is dependent only on thermal and impurity considerations, at what temperature (in degC) will the length of the rod change by (4.748x10^-1) mm?

Use scientific notation, significant figures in answer: 3

Please clearly show method and equations please!

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Amanda K answered 1 year ago
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