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(a) Suppose a meter stick made of steel and one made of invar are the same...

(a) Suppose a meter stick made of steel and one made of invar are the same length at 0°C. What is their difference in length at 45.0°C? The coefficient of thermal expansion is

12 ✕ 10−6/°C for steel and 0.9 ✕ 10−6/°C for invar.

(b) Repeat the calculation for two 38.5-m-long surveyor's tapes.

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genius_generous answered 2 years ago
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