Chapter 10, Problem 16P

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

Chapter
Section

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

# A wire is 25.0 m long at 2.00°C and is 1.19 cm longer at 30.0°C. Find the wire’s coefficient of linear expansion.

To determine
The co-efficient of linear expansion ( α ).

Explanation

Given Info: Length of wire ( L0 ) is 25.0 m The change in length ( Î”L ) is 1.19 cm. The temperature changes from T1=2.00Î¿C to T2=30.0Î¿C .

Formula to calculate the co-efficient of linear expansion is,

Î±=Î”LL0(T2âˆ’T1)

Substitute 25.0 m for L0 , 1.19 cm for Î”L , 2.00Î¿C for T1 and 30.0Î¿C for T2 in the above equation to get Î± .

Î±=1

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