Respostas

2014-03-08T12:03:13-03:00
Resposta

ΔL = 1,107 - 1,100
ΔL = 0,007m
α = 12.10⁻⁶

Formula

ΔL = Lo.α.ΔT
0,007 = 1,100.12.10⁻⁶.(T - 0)
0,007 = 1,100.12.10⁻⁶.T
0,007 = 13,2.10⁻⁶.T
13,2.10⁻⁶.T = 0,007
T = 0,007 /13,2.10⁻⁶
T = 7000.10⁻⁶ /13,2.10⁻⁶
T = 530ºC
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