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Δt= 40-25= 15 °C
Lo= 2 m
α= 0,000011 /°C
Dit:
Lt=..?
Penye:
Lt= Lo.α.Δt+Lo (rumus lain)
Lt= 2×0,000011×15+2
Lt= 2,00033 m
t₂ = 40°C
Δt = 40 - 25
= 15°C
α = 0,000011/°C
l₁ = 2 m
Dit : l₂ = ....
Jwb : l₂ = l₁ (1 + α Δt)
= 2 (1 + 0,000011 x 15)
= 2 (1 + 0,000165)
= 2 x 1,000165
= 2,00033 m