A steel scale measuresthe length of a copper wire as 80.0 cm when both are at 20∘C (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at 40C ? (Given αsteel=11×10−6 per0 C and αcopper=17×10−6 per 0C)

A steel scale measuresthe length of a copper wire as 80.0 cm when both

1.	A steel scale measuresthe length of a copper wire as 80.0 cm when both are at 20∘C (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at 40C ? (Given αsteel=11×10−6 per0 C and αcopper=17×10−6 per 0C)
Answer» A steel scale measuresthe length of a copper wire as 80.0 cm when both are at $20^{\circ} C$ (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at 40C ? $(G i v e n α_{s t e e l} = 11 \times 10 - 6 p e r^{0} C a n d α_{c o p p e r} = 17 \times 10^{- 6} p e r^{0} C)$

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A steel scale measuresthe length of a copper wire as 80.0 cm when both are at 20∘C (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at 40C ? (Given αsteel=11×10−6 per0 C and αcopper=17×10−6 per 0C)

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