Question

Expansion joints are used for materials that easily expand and contract depending upon its temperature. How much expansion can take place for a brass pipe 25.8 m long that experiences temperature changes of 75.2°C?
3.44 cm
5.90 cm
3.69 cm
1.23 cm

Answer 1

Lineartemperature expansion of brass is 18.7·10^-6 1/(K).
1ºC=1 K
Thatis why for 25.6 m pipe the expansion will be:
25.8·18.7·10^-675.2=0.036 m=3.69 cm