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Verified answer
SUHU• pemuaian
Lₜ = ___?
L₀ = 50 cm
α = 1,2×10⁵ /°C
∆t = 220 - 20 = 200 °C
panjang saat suhu t
Lₜ = L₀ (1 + α ∆t)
Lₜ = 50 (1 + 1,2×10⁵ • 200)
Lₜ = 50 (1 + 2,4×10⁷)
Lₜ = 50 • 24000001
Lₜ = 1200000050 cm
Lₜ ≈ 1,2×10⁹ cm ✓
kalau saja ...
α = 1,2×10⁻⁵ /°C