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Lo= 72 cm
ΔL= 72,06-72= 0,06 cm
Δt= 87-12= 75°C
Dit:
α=..?
Penye:
α= ΔL/(Lo.Δt)
α= 0,06/(72×75)
α= 0,06/5400
α= 0,000012 /°C