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Lo= 20 m
Δt= 80-20= 60°C
α= 0,000025 /°C
Dit:
ΔL=..?
Penye:
ΔL= Lo.α.Δt
ΔL= 20×0,000025×60
ΔL= 0,003 m
Δt = 80 - 20 = 60°C
α = 0,000025 /°C
Ditanya = ΔL..?
Jawb = ΔL= Lo . α . Δt
= 20×0,000025×60
= 0,003 m