Calculate the change in length of a concrete sidewalk (Coefficient of linear expansion for concrete is 12 * 10-6 / oC) that is 50 meters that undergoes a temperature change of 2…

Question

asked May 3, 2020 176k views

1 Answer

Seth Johnson · Answer 1 · 2020-05-07T22:48:41+0000

Answer:

The correct answer is 0.015 meters.

Step-by-step explanation:

We know that the change in length of a material on account of temperature change is given by

$\Delta L=L_(o)\alpha \Delta T$

where

L_(o) is the initial Length

$\alpha$ is the coefficient of linear thermal expansion

$\Delta T$ is the change in temperature.

Applying values we get

$\Delta L=50* 12* 10^(-6) * 25\\\\\therefore \Delta L=0.015meters$