Respostas

2013-08-22T14:58:11-03:00
Tc/5 = Tf - 32/9

Tc/5 = 77 - 32/9

Tc = 5 * (45/9)

Tc = 5 * 5

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Tc = 25°C.
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/\L = Lo * alpha * /\T
/\L = 1 * 22*10^-6 * (45 - 25)
/\L = 22 * 10^-6 * 2 * 10^1

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/\L = 44 * 10^-5 metros de variação
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