¿una barra de acero en puente de un camino de la alta montaña tiene una longitud de 50 cm cuando se encuetra a 30 C. Calcular que longitud tendra cuando su temperatura descienda a la -25 C ?

L = 50,033cm

Explanation:

Para saber cuál es la longitud final de la barra de acero cuando la temperatura desciende, solo debemos aplicar la siguiente formula:

L = L₀ (1 + ΔT)  

Donde:  

Entonces, considerando los datos brindados en el ejercicio problema, sabemos que:

L = L₀ (1 + ΔT)  

L = 50 cm x (1 + (1,2x10-5 x 55ºC))    

L = 50 x (1 + 0,00066)

L = 50,033cm      

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