Mathematics, 14.10.2020 14:01 pim9705876
5. Uma das extremidades de uma barra de cobre, com 100 cm de comprimento e 5 cm2 de seção transversal, está situada num banho de vapor d'água sob pressão normal, e a outra extremidade, numa mistura de gelo fundente e água. Despreze as perdas de calor pela superfície lateral da barra. Sendo 0,92 cal/s. Cm.°C o coeficiente de condutibilidade térmica do cobre, determine: b) a temperatura numa seção da barra situada a 20 cm da extremidade fria.
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5. Uma das extremidades de uma barra de cobre, com 100 cm de comprimento e 5 cm2 de seção transversa...
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