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Dik:
ΔL= 0,11 cm
Lo= 100 cm
Δt= 90°
Dit:
α= ...?
Penye:
α= ΔL/Lo.Δt
α= 0,11/100×90
α= 0,099 /°C
2.)
Dik:
Lo= 50 cm
α= 12×10⁻⁶ = 0,000012 /°C
Δt= 100-0= 100 °C
Dit:
Lt= ..?
Penye:
Lt= Lo(1+α×Δt)
Lt= 50×(1+0,000012×100)
Lt= 50×(1+0,0012)
Lt= 50×1,0012
Lt= 50,06 cm