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Lab Course 103A-Section 006 Physics Laboratory ReportLab number and Title:LAB D: Linear Expansion CoefficientName:Kris EdquilagGroup members:Ernessa Francois, Andrew RiveraExperiment Date :Feburary 10, 2017Instructor’s name:Sizhan Liu1. OBJECTIVESTo measure the coefficient of linear expansion for different metal rods.2. THEORETICAL BACKGROUNDLinear dimensions (length and diameter) for most substances increase as the temperature increases in arange that does not produce a change of phase. The added heat increases the vibrational kinetic energy of theatoms in the material, which increases the distance between the atoms. To the first approximation, the increasein a linear dimension ΔL is proportional to the increase in temperature ΔT and the initial dimension Lo:ΔL/L = αΔTWhere the proportionalityαis thecoefficient of linear expansion.This coefficient depends on many factors,such as the composition and purity of the material, temperature, etc.