Davison Turnbull
09/02/2023 · Middle School
9. (UFAL 91) O comprimento de uma barra metálica a \( 0^{\circ} \mathrm{C} \) è de 2000 mm e a \( 100^{\circ} \mathrm{C} \) é de 2001 mm . O coeficiente de dilatação linear dessa barra, \( \mathrm{cm}^{\circ} \mathrm{C}^{-1} \) \( \begin{array}{llllll}\text { a) } 1 \times 10^{-6} & \text { b) })^{-1} 4 \times 10^{-6} & \text { c) } 5 \times 10^{-6} & \text { d) } 3 \times 10^{-6} & \text { e) } 2 \times 10^{-6}\end{array} \)
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O coeficiente de dilatação linear da barra metálica é \( 5 \times 10^{-6} \, \text{cm}^{\circ} \text{C}^{-1} \). A resposta correta é c) \( 5 \times 10^{-6} \).
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