Um corpo de vidro está completamente cheio com 250 cm³ de óleo a 20°C. O volume transbordado, em cm³, quando a temperatura do conjunto passa a 120°C, vale ? dados: coeficiente de dilatação LINEAR (alfa) do vidro= 12.10(elevado a -6)°C; coeficiente de dilatação volumétrico(gama) do óleo= 500.10(elevado a -1)°C
Respostas
respondido por:
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yrec = 3.alfa.rec
yap = yliq - yrec
yap = 500.10^(-6) - 36.10^(-6)
yap = 464.10^(-6) ºC-1
dVap = vo.yap.dT
dVap = 250*464.10^(-6)*100
dVap = 11,6 cm³
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yap = yliq - yrec
yap = 500.10^(-6) - 36.10^(-6)
yap = 464.10^(-6) ºC-1
dVap = vo.yap.dT
dVap = 250*464.10^(-6)*100
dVap = 11,6 cm³
GMTDetect languageAfrikaansAlbanianArabicArmenianAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanCebuanoChichewaChinese (Simplified)Chinese (Traditional)CroatianCzechDanishDutchEnglishEsperantoEstonianFilipinoFinnishFrenchGalicianGeorgianGermanGreekGujaratiHaitian CreoleHausaHebrewHindiHmongHungarianIcelandicIgboIndonesianIrishItalianJapaneseJavaneseKannadaKazakhKhmerKoreanLaoLatinLatvianLithuanianMacedonianMalagasyMalayMalayalamMalteseMaoriMarathiMongolianMyanmar (Burmese)NepaliNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSesothoSinhalaSlovakSlovenianSomaliSpanishSundaneseSwahiliSwedishTajikTamilTeluguThaiTurkishUkrainianUrduUzbekVietnameseWelshYiddishYorubaZuluAfrikaansAlbanianArabicArmenianAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanCebuanoChichewaChinese (Simplified)Chinese (Traditional)CroatianCzechDanishDutchEnglishEsperantoEstonianFilipinoFinnishFrenchGalicianGeorgianGermanGreekGujaratiHaitian CreoleHausaHebrewHindiHmongHungarianIcelandicIgboIndonesianIrishItalianJapaneseJavaneseKannadaKazakhKhmerKoreanLaoLatinLatvianLithuanianMacedonianMalagasyMalayMalayalamMalteseMaoriMarathiMongolianMyanmar (Burmese)NepaliNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSesothoSinhalaSlovakSlovenianSomaliSpanishSundaneseSwahiliSwedishTajikTamilTeluguThaiTurkishUkrainianUrduUzbekVietnameseWelshYiddishYorubaZuluText-to-speech function is limited to 200 charactersOptions : History : Feedback : DonateClose
respondido por:
3
Resposta:
11,6
Explicação:
vamos calcular a primeiro a do vidro:
lembrando que temos que transformar a dilatação linear que é 12.10^-6 para dilatação volumétrica, ou seja, vamos multiplicar por 3:
usando a fórmula da dilatação volumétrica para o vidro:
ΔV=V.y.ΔT
ΔV=250.36.10^-6.100
ΔV=0,3
Agora vamos calcular o volume do óleo:
ΔV=V.y.ΔT
ΔV=250.500.10^-6.100
ΔV=12,5
A questão quer o volume transbordado, então:
ΔVreal= ΔVaparente+ ΔVrecipiente
onde:
ΔVreal: do líquido
ΔVrecipiente: o vidro
ΔV: volume transbordado
colocando os dados:
ΔVreal= ΔVaparente+ ΔVrecipiente
12,5=ΔVaparente+0,3
12,5-0,3=ΔVaparente
ΔVaparente= 11,6
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