Question

Calculate the change in length of a Pyrex glass dish (Coefficient of linear expansion for Pyrex is 3 x 10^-6 /C) that is 0.3 meters that undergoes a temperature change of 250 C.

Answer 1

0.000225 m

Step-by-step explanation:

Coefficient of linear expansion =
`\alpha_L=3* 10^(-6) /C`

Length = 0.3 meters

ΔT = Change in temperature = 250 °C

Linear expansion

`(\Delta L)/(L) = \alpha_L\Delta T\\\Rightarrow \Delta L=\alpha_L\Delta T* L\\\Rightarrow \Delta L=3* 10^(-6)* 0.3* 250=0.000225\ m`

Change in length of the Pyrex glass dish is 0.000225 m.