225k views
0 votes
Un puente(construido de acero) que conduce hacia una bahía mide 1.30X10-3m entre sus torres de apoyo. ¿Cuánto se dilata el puente durante un día en el que la temperatura alcanza una diferencia de 30°C?

User APC
by
6.9k points

1 Answer

6 votes

Answer:

ΔL = 0.429 m

Step-by-step explanation:

The expression for linear thermal expansion is

ΔL = α L₀ ΔT

the coefficient of linear expansion of steel is 11 10⁻⁶ ºC⁻¹

the initial length of the bridge is L₀ = 1.30 10³ m and the temperature variation is ΔT = 30 ºC

calculate

ΔL = 11 10⁻⁶ 1.30 10³ 30

ΔL = 4.29 10⁻¹ m

ΔL = 0.429 m

User Jack Collins
by
6.8k points