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L0 = 25cm
T2 = 25 'c
T1 = -10 'c
α besi = 0,000011/ 'c
ditanya:
ΔL
jawab:
ΔL = L0.α.ΔT
25 . 0,000011.(25 - -10)
0,000275 . 35
0,009625
jadi,pertambahan panjang pada baja adalah 0,009625