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Lo= 200 cm
Lt= 200,15 cm
ΔL= 200,15-200= 0,15 cm
Δt= 50-0= 50 °C
Dit:
α=..?
Penye:
ΔL= Lo.α.Δt
Lo.α.Δt= ΔL
200×α×50= 0,15
10000×α= 0,15
α= 0,15/10000
α= 0,000015 /°C