Answer to Question #201550 in Physics for leen

Question #201550

A crazy physics teacher has a golden spear of 3.2m. How long it will be when he heats it up to 1000C from room temperature(+20C)?

Single choice.

Expert's answer

"L'=L_0(1+\\alpha\\Delta T)\\\\L'=3.2(1+14\\cdot10^{-6}(1000-20))=3.244\\ m"

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