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Suppose a meter stick made of steel (1.2x10-5 /ºC) and one made of an alloy of...

Suppose a meter stick made of steel (1.2x10-5 /ºC) and one made of an alloy of iron, nickel and steel, ?=5.8x10-6 /ºC) are the same length at 2ºC . What is their difference in millimeters at 23.3ºC?

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