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T1 = 15°C
T2 = 25°C
α = 0,000019/K = 19./K
Ditanya = ΔL = ?
Jawab = ΔL = L0 α ΔT
ΔT = T2 - T1
ΔT = 25°C - 15°C
= 10°C
ΔL = 1 m × 19./K x 10°C
= 1 m × 19./K × 283 K
= 1 m × 19. × 283
= 1 m × 19 × 283 ×
= 19 m × 283 ×
= 5377 m ×
= 5337000 mm ×
= 5337000 ×
=
=
=
= 5,337 mm
≈ 5 mm