Respostas

2013-10-12T16:26:34-03:00
Devemos usar ΔL=Lo.α.ΔT

ΔL = 1,0.1,05.10^(-5).(70-20)
ΔL = 52,5.10^(-5)
ou
ΔL = 5,25.10^(-4) m
abraço
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