A copper rod of length 1,0 m expands by 0,85 mm when heated from 20°C to 70°C. What is the linear expansion coefficient of copper?
Answer and explanation
Correct answer: C.
- Step 1: Linear thermal expansion: . Step 2. m, m, K. Step 3. . Answer: 1,7 \times 10^{-5} K^{-1}. Why not the others: .
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