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Lo = 20 m
To = 20 K
T = 55 K
α = 0,000012/K
Ditanyakn : ΔL ?
Dijawab :
ΔL = Lo x α x ΔT
= 20 x 0,000012 x (55-20)
= 20 x 0,000012 x 35
= 0,0084 m