Um ebulidor de resistência elétrica igual a 75,0W está envolto por 0,20 kg de gelo a 0 ºC. Os terminais do ebulidor são conectados a um gerador que fornece uma corrente elétrica de intensidade igual a 2 A, durante 1,4 minutos. Considere que toda energia dissipada pelo ebulidor foi integralmente absorvida pelo gelo. Considere, ainda, cágua= 4 J/g ºC e Lf(água) =320 J/g. Sobre esse evento físico, pergunta-se: a) Qual a energia elétrica total fornecida pelo gerador? b) Qual a temperatura final da água?
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Um ebulidor de resistência elétrica igual a 75,0W está envolto por 0,20 kg de gelo a 0 ºC. Os termin...
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