A steel scale measures the length of a copper wire as 80.0 cm when both are at 20∘C (the calibration temperature for the scale). What would be the scale reading for the length of the wire when both are at 40∘C? (Given αsteel=11×10−6/ ∘C and αcopper=17×10−6/ ∘C)

A steel scale measures the length of a copper wire as 80.0 cm when bot

1.	A steel scale measures the length of a copper wire as 80.0 cm when both are at 20∘C (the calibration temperature for the scale). What would be the scale reading for the length of the wire when both are at 40∘C? (Given αsteel=11×10−6/ ∘C and αcopper=17×10−6/ ∘C)
Answer» A steel scale measures the length of a copper wire as $80.0 cm$ when both are at $20^{\circ} C$ (the calibration temperature for the scale). What would be the scale reading for the length of the wire when both are at $40^{\circ} C$ ? (Given $α_{steel} = 11 \times 10^{- 6} /^{\circ} C$ and $α_{copper} = 17 \times 10^{- 6} /^{\circ} C)$

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A steel scale measures the length of a copper wire as 80.0 cm when both are at 20∘C (the calibration temperature for the scale). What would be the scale reading for the length of the wire when both are at 40∘C? (Given αsteel=11×10−6/ ∘C and αcopper=17×10−6/ ∘C)

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