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Ano: 2018 Banca: CESGRANRIO Órgão: Petrobras Prova: CESGRANRIO - 2018 - Petrobras - Técnico de Inspeção de Equipamentos e Instalações Júnior O alumínio apresenta um coeficiente de dilatação linear de 23 x 10-6 K-1 . Um fio condutor elétrico de alumínio tinha 20 m a 25°C e, com a passagem de corrente, o fio chegou à temperatura de 75°C. Qual foi a variação de comprimento do fio de alumínio, em mm? #PETRO3 #petrobras #CNU #morangodoamor #Vibes
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