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Lo = 20 m
α = 0,000011/°C
ΔT = 45 - 18 = 27°C
Dit :
ΔL...?
Dij :
ΔL = Lo x α x ΔT
ΔL = 20 x 0,000011 x 27
ΔL = 0,00594 m
ΔL = 0,594 cm
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