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lt = 2 + 2 . 0,000011 . (100 - 20)
lt = 2 + 0,000022 . 80
lt = 2 + 0,00176
= 2,00176 m
T0 = 20 C
L = 2 m
T = 100 C
α = 0,000011/C
dit : L ?
maka :
L = L0 (1+α x ΔT)
= 2 (1+ 0,000011 x (100-20)
=2 ( 1 + 0,000011 x 80)
= 2 (1 + 0,00088)
= 2 (1,00088)
= 2,00176 m