supose you have two meter stick, one is made up of steel & one is made if invar
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Suppose a meter stick made of steel and one made of invar (an alloy of iron and nickel) are the same length at 0°C. What is their difference in length in millimeters at 20.0°C? 0.774 mm (b) Repeat the calculation for two 34.0 m long surveyor's tapes. mm
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