{"id":4931,"date":"2020-01-13T02:42:29","date_gmt":"2020-01-13T02:42:29","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=4931"},"modified":"2024-07-02T13:54:59","modified_gmt":"2024-07-02T13:54:59","slug":"termodinamica-2018-2019","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/vestibulares-recentes\/fisica-termica\/termodinamica-2018-2019\/","title":{"rendered":"Termodin\u00e2mica – 2018 – 2019"},"content":{"rendered":"

Termodin\u00e2mica<\/span><\/span><\/span><\/p>\n

Transforma\u00e7\u00f5es gasosas<\/span><\/span><\/span><\/p>\n

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01-(CEDERJ-RJ-2018)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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Uma\u00a0<\/b><\/span><\/span><\/span>amostra de um g\u00e1s ideal ocupa, inicialmente, um volume V0,\u00a0<\/b><\/span><\/span><\/span>sendo sua\u00a0<\/b><\/span><\/span><\/span>temperatura T0<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span>e\u00a0<\/b><\/span><\/span><\/span>press\u00e3o 3P0.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

O\u00a0<\/b><\/span><\/span><\/span>g\u00e1s sofre uma transforma\u00e7\u00e3o\u00a0<\/b><\/span><\/span><\/span>em\u00a0<\/b><\/span><\/span><\/span>duas etapas.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Na\u00a0<\/b><\/span><\/span><\/span>primeira etapa, a press\u00e3o do g\u00e1s passa de 3P0\u00a0para 2P0<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span>mantendo o\u00a0<\/b><\/span><\/span><\/span>volume do g\u00e1s constante igual a V0<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span>e\u00a0<\/b><\/span><\/span><\/span>atingindo a temperatura final T1<\/b><\/span><\/span><\/span>.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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Na\u00a0<\/b><\/span><\/span><\/span>segunda etapa,\u00a0<\/b><\/span><\/span><\/span>o\u00a0<\/b><\/span><\/span><\/span>volume do g\u00e1s muda para 2V0,\u00a0<\/b><\/span><\/span><\/span>mantendo\u00a0<\/b><\/span><\/span><\/span>press\u00e3o do g\u00e1s constante em 2P0<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span>e\u00a0<\/b><\/span><\/span><\/span>atingindo a temperatura final T2.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

As\u00a0<\/b><\/span><\/span><\/span>rela\u00e7\u00f5es entre T0, T1\u00a0e T2<\/b><\/span><\/span><\/span>\u00a0s\u00e3o:<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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02-(UFPR-PR-018)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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Em\u00a0<\/b><\/span><\/span><\/span>Termodin\u00e2mica,<\/b><\/span><\/span><\/span>\u00a0estudamos\u00a0<\/b><\/span><\/span><\/span>processos importantes\u00a0<\/b><\/span><\/span><\/span>que fazem parte de\u00a0<\/b><\/span><\/span><\/span>ciclos utilizados\u00a0<\/b><\/span><\/span><\/span>em\u00a0<\/b><\/span><\/span><\/span>m\u00e1quinas t\u00e9rmicas,\u00a0<\/b><\/span><\/span><\/span>alguns dos quais de\u00a0<\/b><\/span><\/span><\/span>grande relev\u00e2ncia tecnol\u00f3gica, al\u00e9m de cient\u00edfica.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Com\u00a0<\/b><\/span><\/span><\/span>rela\u00e7\u00e3o<\/b><\/span><\/span><\/span>\u00a0ao que\u00a0<\/b><\/span><\/span><\/span>ocorre com um g\u00e1s ideal,\u00a0<\/b><\/span><\/span><\/span>identifique como\u00a0<\/b><\/span><\/span><\/span>verdadeiras (V) ou falsas (F)<\/b><\/span><\/span><\/span>\u00a0as\u00a0<\/b><\/span><\/span><\/span>seguintes afirmativas:<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

( )\u00a0<\/b><\/span><\/span><\/span>Em todo\u00a0<\/b><\/span><\/span><\/span>processo isovolum\u00e9trico,\u00a0<\/b><\/span><\/span><\/span>tamb\u00e9m chamado\u00a0<\/b><\/span><\/span><\/span>de isoc\u00f3rico,\u00a0<\/b><\/span><\/span><\/span>o\u00a0<\/b><\/span><\/span><\/span>trabalho realizado pelo g\u00e1s \u00e9 nulo.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

( )\u00a0<\/b><\/span><\/span><\/span>Em todo\u00a0<\/b><\/span><\/span><\/span>processo adiab\u00e1tico,\u00a0<\/b><\/span><\/span><\/span>a\u00a0<\/b><\/span><\/span><\/span>energia interna do g\u00e1s \u00e9 constante.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

( )\u00a0<\/b><\/span><\/span><\/span>Em todo\u00a0<\/b><\/span><\/span><\/span>processo isob\u00e1rico, n\u00e3o h\u00e1 trocas de calor entre o g\u00e1s e o meio externo.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

( )\u00a0<\/b><\/span><\/span><\/span>Em todo\u00a0<\/b><\/span><\/span><\/span>processo isot\u00e9rmico,\u00a0<\/b><\/span><\/span><\/span>a\u00a0<\/b><\/span><\/span><\/span>temperatura do g\u00e1s aumenta\u00a0<\/b><\/span><\/span><\/span>quando h\u00e1 realiza\u00e7\u00e3o de trabalho sobre ele.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Assinale a alternativa que apresenta a sequ\u00eancia correta, de cima para baixo.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

a) V \u2013 V \u2013 V \u2013 V.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

b) F \u2013 V \u2013 F \u2013 F.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

c) F \u2013 V \u2013 F \u2013 V.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

d) F \u2013 F \u2013 V \u2013 F.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

e) V \u2013 F \u2013 F \u2013 F.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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03-(Faculdade de Ci\u00eancias M\u00e9dicas da Santa Casa de S\u00e3o Paulo \u2013 018)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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O\u00a0<\/b><\/span><\/span><\/span>gr\u00e1fico representa\u00a0<\/b><\/span><\/span><\/span>parte da\u00a0<\/b><\/span><\/span><\/span>curva de aquecimento<\/b><\/span><\/span><\/span>\u00a0de\u00a0<\/b><\/span><\/span><\/span>determinada massa de gelo, inicialmente\u00a0<\/b><\/span><\/span><\/span>a uma\u00a0<\/b><\/span><\/span><\/span>temperatura de \u2013 40\u00a0oC,\u00a0<\/b><\/span><\/span><\/span>at\u00e9\u00a0<\/b><\/span><\/span><\/span>transformar-se em \u00e1gua l\u00edquida a 20\u00a0oC.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

As etapas 1, 2 e 3 indicadas ocorrem em intervalos de tempo \u2206t1, \u2206t2\u00a0e \u2206t3, respectivamente.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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Considerando\u00a0<\/b><\/span><\/span><\/span>que a\u00a0<\/b><\/span><\/span><\/span>energia necess\u00e1ria<\/b><\/span><\/span><\/span>\u00a0para\u00a0<\/b><\/span><\/span><\/span>provocar essa transforma\u00e7\u00e3o\u00a0<\/b><\/span><\/span><\/span>tenha sido\u00a0<\/b><\/span><\/span><\/span>fornecida\u00a0<\/b><\/span><\/span><\/span>por uma\u00a0<\/b><\/span><\/span><\/span>fonte t\u00e9rmica de pot\u00eancia constante,\u00a0<\/b><\/span><\/span><\/span>que\u00a0<\/b><\/span><\/span><\/span>todo o calor fornecido por essa fonte tenha sido absorvido pela massa<\/b><\/span><\/span><\/span>\u00a0que\u00a0<\/b><\/span><\/span><\/span>sofreu a transforma\u00e7\u00e3o,\u00a0<\/b><\/span><\/span><\/span>que o\u00a0<\/b><\/span><\/span><\/span>calor espec\u00edfico do gelo \u00e9 0,5 cal\/(g.oC),\u00a0<\/b><\/span><\/span><\/span>que o\u00a0<\/b><\/span><\/span><\/span>calor espec\u00edfico da \u00e1gua l\u00edquida \u00e9 1 cal\/(g.oC)\u00a0<\/b><\/span><\/span><\/span>e que o\u00a0<\/b><\/span><\/span><\/span>calor latente de fus\u00e3o do gelo \u00e9 80 cal\/g<\/b><\/span><\/span><\/span>, \u00e9\u00a0<\/b><\/span><\/span><\/span>correto afirmar\u00a0<\/b><\/span><\/span><\/span>que<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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04- (PUC-SP-018)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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05-Instituto Federal de Educa\u00e7\u00e3o, Ci\u00eancia e Tecnologia de Pernambuco \u2013 IFPE \u2013 2019<\/b><\/span><\/span><\/span><\/p>\n

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Em uma\u00a0<\/b><\/span><\/span><\/span>transforma\u00e7\u00e3o isob\u00e1rica,<\/b><\/span><\/span><\/span>\u00a0certo\u00a0<\/b><\/span><\/span><\/span>g\u00e1s ideal obedece ao gr\u00e1fico abaixo<\/b><\/span><\/span><\/span>. A\u00a0<\/b><\/span><\/span><\/span>temperatura,<\/b><\/span><\/span><\/span><\/p>\n

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quando o g\u00e1s quadruplicar seu volume inicial, ser\u00e1<\/b><\/span><\/span><\/span><\/p>\n

a)\u00a0<\/b><\/span><\/span><\/span>200K.\u00a0<\/b><\/span><\/span><\/span>b)\u00a0<\/b><\/span><\/span><\/span>800K.\u00a0<\/b><\/span><\/span><\/span>c)\u00a0<\/b><\/span><\/span><\/span>400K.\u00a0<\/b><\/span><\/span><\/span>d)\u00a0<\/b><\/span><\/span><\/span>500K.\u00a0<\/b><\/span><\/span><\/span>e)\u00a0<\/b><\/span><\/span><\/span>1000K<\/b><\/span><\/span><\/span><\/p>\n

06-(UEMA-MA-019)<\/b><\/span><\/span><\/span><\/p>\n

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O\u00a0<\/b><\/span><\/span><\/span>gelo seco \u00e9 g\u00e1s carb\u00f4nico (CO\u00ad2)<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>congelado a uma temperatura superbaixa: -78,5\u00b0C<\/b><\/span><\/span><\/span>. O\u00a0<\/b><\/span><\/span><\/span>g\u00e1s carb\u00f4nico faz parte do ar que respiramos,<\/b><\/span><\/span><\/span>\u00a0al\u00e9m de\u00a0<\/b><\/span><\/span><\/span>tamb\u00e9m ser o ar que soltamos ao expirar.<\/b><\/span><\/span><\/span>\u00a0Em\u00a0<\/b><\/span><\/span><\/span>quantidades normais, ele n\u00e3o faz mal a n\u00f3s nem \u00e0 natureza, muito pelo contr\u00e1rio:<\/b><\/span><\/span><\/span>\u00a0ele\u00a0<\/b><\/span><\/span><\/span>\u00e9 respons\u00e1vel por manter a temperatura do planeta, j\u00e1 que, sem ele, seria tudo muito, muito frio.<\/b><\/span><\/span><\/span><\/p>\n

Um fato curioso sobre o gelo seco \u00e9 que, quando ele derrete, ele n\u00e3o vira l\u00edquido: ele vira um g\u00e1s.<\/b><\/span><\/span><\/span><\/p>\n

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Isso mesmo:\u00a0<\/b><\/span><\/span><\/span>ele vai direto do estado s\u00f3lido para o estado gasoso.\u00a0<\/b><\/span><\/span><\/span>Al\u00e9m disso,\u00a0<\/b><\/span><\/span><\/span>depois que ele derreteu, voc\u00ea n\u00e3o consegue dizer que ele estava l\u00e1: ele n\u00e3o deixa nenhum cheiro ou res\u00edduo<\/b><\/span><\/span><\/span>. M\u00e1gico, n\u00e9?<\/b><\/span><\/span><\/span><\/p>\n

https:\/\/blog.tudogostoso.com.br\/estilo-de-vida\/gelo-seco-como-funciona\/<\/b><\/span><\/span><\/span><\/p>\n

Uma\u00a0<\/b><\/span><\/span><\/span>subst\u00e2ncia pode passar de uma fase para outra, por meio do recebimento ou do fornecimento de calor.<\/b><\/span><\/span><\/span><\/p>\n

A\u00a0<\/b><\/span><\/span><\/span>passagem direta da fase s\u00f3lida para a gasosa<\/b><\/span><\/span><\/span>\u00a0\u00e9 denominada<\/b><\/span><\/span><\/span><\/p>\n

a)\u00a0<\/b><\/span><\/span><\/span>Fus\u00e3o.<\/b><\/span><\/span><\/span><\/p>\n

b)\u00a0<\/b><\/span><\/span><\/span>Sublima\u00e7\u00e3o.<\/b><\/span><\/span><\/span><\/p>\n

c)\u00a0<\/b><\/span><\/span><\/span>Solidifica\u00e7\u00e3o.<\/b><\/span><\/span><\/span><\/p>\n

d)\u00a0<\/b><\/span><\/span><\/span>Condensa\u00e7\u00e3o.<\/b><\/span><\/span><\/span><\/p>\n

e)\u00a0<\/b><\/span><\/span><\/span>Vaporiza\u00e7\u00e3o.<\/b><\/span><\/span><\/span><\/p>\n

07-(UniCEUB \u2013 Medicina \u2013 DF \u2013 019)<\/b><\/span><\/span><\/span><\/p>\n

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Uma\u00a0<\/b><\/span><\/span><\/span>amostra de g\u00e1s<\/b><\/span><\/span><\/span>\u00a0\u00e9 contida\u00a0<\/b><\/span><\/span><\/span>hermeticamente em um recipiente dotado de \u00eambolo m\u00f3vel<\/b><\/span><\/span><\/span>, ocupando um\u00a0<\/b><\/span><\/span><\/span>volume de 1.10-3\u00a0m3\u00a0, sob temperatura de 200 K e press\u00e3o de 2.105\u00a0Pa.<\/b><\/span><\/span><\/span><\/p>\n

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O\u00a0<\/b><\/span><\/span><\/span>g\u00e1s passa por uma transforma\u00e7\u00e3o isob\u00e1rica\u00a0<\/b><\/span><\/span><\/span>que o leva\u00a0<\/b><\/span><\/span><\/span>\u00e0 temperatura de 600 K\u00a0<\/b><\/span><\/span><\/span>e, em seguida, por\u00a0<\/b><\/span><\/span><\/span>uma transforma\u00e7\u00e3o isot\u00e9rmica,<\/b><\/span><\/span><\/span>\u00a0de modo que\u00a0<\/b><\/span><\/span><\/span>sua press\u00e3o passa a ser 3.105\u00a0Pa.<\/b><\/span><\/span><\/span><\/p>\n

No\u00a0<\/b><\/span><\/span><\/span>final dos dois processos, o volume do g\u00e1s\u00a0<\/b><\/span><\/span><\/span>ser\u00e1<\/b><\/span><\/span><\/span><\/p>\n

(A)\u00a0<\/b><\/span><\/span><\/span>2.10-3\u00a0m3<\/b><\/span><\/span><\/span><\/p>\n

(B)\u00a0<\/b><\/span><\/span><\/span>3.10-3\u00a0m3<\/b><\/span><\/span><\/span><\/p>\n

(C)\u00a0<\/b><\/span><\/span><\/span>4.10-3\u00a0m3<\/b><\/span><\/span><\/span><\/p>\n

(D)\u00a0<\/b><\/span><\/span><\/span>5.10-3\u00a0m3<\/b><\/span><\/span><\/span><\/p>\n

(E)\u00a0<\/b><\/span><\/span><\/span>6.10-3\u00a0m3<\/b><\/span><\/span><\/span><\/p>\n

08-<\/b><\/span><\/span><\/span>(UEMG-MG-019)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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09-(Faculdade de Ci\u00eancias M\u00e9dicas da Santa Casa de S\u00e3o Paulo \u2013 SP \u2013 019)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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10-Escola Naval 2018\/2019<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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Analise o diagrama PV abaixo.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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A figura acima exibe, num diagrama PV,\u00a0<\/b><\/span><\/span><\/span>um ciclo revers\u00edvel a que est\u00e1 submetido 2 moles de um g\u00e1s monoat\u00f4mico ideal.<\/b><\/span><\/span><\/span>\u00a0Sabendo que\u00a0<\/b><\/span><\/span><\/span>as temperaturas nos estados A, B e C est\u00e3o relacionadas por TC\u00a0= 3TB\u00a0= 9TA,<\/b><\/span><\/span><\/span>\u00a0qual a efici\u00eancia do ciclo?<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

(A) 1\/3<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

(B) 1\/5<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

(C) 1\/6<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

(D) 1\/7<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

(E) 1\/9<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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11-(MEDICINA -UNIVERSIDADE MUNICIPAL DE S\u00c3O CAETANO DO SUL \u2013\u2013 USCS-SP \u2013 019)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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De acordo com o manual t\u00e9cnico\u00a0<\/b><\/span><\/span><\/span>de uma\u00a0<\/b><\/span><\/span><\/span>panela de press\u00e3o caseira,<\/b><\/span><\/span><\/span>\u00a0a\u00a0<\/b><\/span><\/span><\/span>v\u00e1lvula de seguran\u00e7a da panela ser\u00e1 acionada se a press\u00e3o no interior desse recipiente atingir 1,80.105\u00a0Pa.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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Suponha que\u00a0<\/b><\/span><\/span><\/span>seja colocado na panela um g\u00e1s ideal \u00e0 temperatura de 27 \u00baC, sob press\u00e3o de 1,00. 105\u00a0Pa, e que nessa situa\u00e7\u00e3o o sistema de seguran\u00e7a funcione da forma indicada no manual. A m\u00e1xima temperatura a que esse g\u00e1s poder\u00e1 ser submetido sem que a v\u00e1lvula de seguran\u00e7a da panela seja acionada<\/b><\/span><\/span><\/span>\u00a0ser\u00e1<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

(A)\u00a0<\/b><\/span><\/span><\/span>587 \u00baC.\u00a0<\/b><\/span><\/span><\/span>(B)\u00a0<\/b><\/span><\/span><\/span>127 \u00baC.\u00a0<\/b><\/span><\/span><\/span>(C)\u00a0<\/b><\/span><\/span><\/span>183 \u00baC.\u00a0<\/b><\/span><\/span><\/span>(D)\u00a0<\/b><\/span><\/span><\/span>267 \u00baC.\u00a0<\/b><\/span><\/span><\/span>(E)\u00a0<\/b><\/span><\/span><\/span>330 \u00baC.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

12-Instituto Federal de Educa\u00e7\u00e3o, Ci\u00eancia e Tecnologia do Norte de Minas Gerais\u00a0(IFNMG)- 2019<\/b><\/span><\/span><\/span><\/p>\n

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O\u00a0<\/b><\/span><\/span><\/span>ciclo de combust\u00e3o no cilindro de um motor a \u00e1lcool<\/b><\/span><\/span><\/span>\u00a0pode ser\u00a0<\/b><\/span><\/span><\/span>representado<\/b><\/span><\/span><\/span>\u00a0\u2013\u00a0<\/b><\/span><\/span><\/span>simplificadamente e fora de escala\u00a0<\/b><\/span><\/span><\/span>\u2013 pelo\u00a0<\/b><\/span><\/span><\/span>diagrama da figura.<\/b><\/span><\/span><\/span><\/p>\n

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Nesse diagrama,\u00a0<\/b><\/span><\/span><\/span>durante a\u00a0<\/b><\/span><\/span><\/span>compress\u00e3o\u00a0<\/b><\/span><\/span><\/span>\u2013 no\u00a0<\/b><\/span><\/span><\/span>processo de\u00a0I\u00a0para\u00a0F\u00a0<\/b><\/span><\/span><\/span>\u2013, o\u00a0<\/b><\/span><\/span><\/span>volume da mistura \u00e9 reduzido de V<\/b><\/span><\/span><\/span>I<\/b><\/span><\/span><\/span>\u00a0para V<\/b><\/span><\/span><\/span>F<\/b><\/span><\/span><\/span>.<\/b><\/span><\/span><\/span><\/p>\n

Nesse caso, sabe-se que a efici\u00eancia termodin\u00e2mica (E) depende da taxa de compress\u00e3o e \u00e9 dada por:<\/b><\/span><\/span><\/span><\/p>\n

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Considerando-se os dados num\u00e9ricos\u00a0<\/b><\/span><\/span><\/span>do\u00a0<\/b><\/span><\/span><\/span>diagrama e admitindo-se, numa primeira aproxima\u00e7\u00e3o, que a mistura ar-\u00e1lcool comporta-se como um g\u00e1s ideal, o valor correto de E ser\u00e1:<\/b><\/span><\/span><\/span><\/p>\n

A)\u00a0<\/b><\/span><\/span><\/span>0,70\u00a0<\/b><\/span><\/span><\/span>B)\u00a0<\/b><\/span><\/span><\/span>0,25\u00a0<\/b><\/span><\/span><\/span>C)\u00a0<\/b><\/span><\/span><\/span>0,40\u00a0<\/b><\/span><\/span><\/span>D)\u00a0<\/b><\/span><\/span><\/span>0,60<\/b><\/span><\/span><\/span><\/p>\n

13-Instituto Federal de Educa\u00e7\u00e3o, Ci\u00eancia e Tecnologia do Norte de Minas Gerais\u00a0(IFNMG)- 2019<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

Considere que uma subst\u00e2ncia S comporta-se segundo o diagrama de fases<\/b><\/span><\/span><\/span>\u00a0ilustrado na figura abaixo.<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

De acordo com esse diagrama<\/b><\/span><\/span><\/span>, se uma\u00a0<\/b><\/span><\/span><\/span>amostra da subst\u00e2ncia S estiver a 35<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/span>\u00a0C de temperatura e sob press\u00e3o de 3,75 atm, o estado de agrega\u00e7\u00e3o da amostra\u00a0<\/b><\/span><\/span><\/span>ser\u00e1:<\/b><\/span><\/span><\/span><\/p>\n

A)<\/b><\/span><\/span><\/span>\u00a0l\u00edquido\u00a0<\/b><\/span><\/span><\/span>B)\u00a0<\/b><\/span><\/span><\/span>vapor\u00a0<\/b><\/span><\/span><\/span>C)\u00a0<\/b><\/span><\/span><\/span>g\u00e1s\u00a0<\/b><\/span><\/span><\/span>D)\u00a0<\/b><\/span><\/span><\/span>s\u00f3lido<\/b><\/span><\/span><\/span><\/p>\n

14-(UDESC-SC-019)<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

Dois moles de g\u00e1s ideal s\u00e3o comprimidos isotermicamente,<\/b><\/span><\/span><\/span>\u00a0\u00e0\u00a0<\/b><\/span><\/span><\/span>temperatura ambiente de 25\u00baC,\u00a0<\/b><\/span><\/span><\/span>at\u00e9 que\u00a0<\/b><\/span><\/span><\/span>o volume deste g\u00e1s se reduza \u00e0 metade.<\/b><\/span><\/span><\/span><\/p>\n

Assinale a alternativa que melhor representa a raz\u00e3o entre as press\u00f5es inicial e final\u00a0<\/b><\/span><\/span><\/span>do g\u00e1s.<\/b><\/span><\/span><\/span><\/p>\n

A.\u00a0<\/b><\/span><\/span><\/span>( ) 2\u00a0<\/b><\/span><\/span><\/span>B.\u00a0<\/b><\/span><\/span><\/span>( ) 4\u00a0<\/b><\/span><\/span><\/span>C.\u00a0<\/b><\/span><\/span><\/span>( ) 1\/4\u00a0<\/b><\/span><\/span><\/span>D.\u00a0<\/b><\/span><\/span><\/span>( ) 1\u00a0<\/b><\/span><\/span><\/span>E.\u00a0<\/b><\/span><\/span><\/span>( ) \u00bd<\/b><\/span><\/span><\/span><\/p>\n

Princ\u00edpios da Termodin\u00e2mica<\/span><\/span><\/span><\/p>\n

15-(Universidade Tecnol\u00f3gica Federal do Paran\u00e1\u00a0\u2013\u00a0UTFPR\u00a0\u2013 019)<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

O\u00a0<\/b><\/span><\/span><\/span>diagrama a seguir representa a transforma\u00e7\u00e3o c\u00edclica termodin\u00e2mica sofrida por uma massa gasosa:<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

De acordo com o digrama \u00e9 correto afirmar que:<\/b><\/span><\/span><\/span><\/p>\n

A)\u00a0<\/b><\/span><\/span><\/span>se o ciclo for percorrido em sentido hor\u00e1rio, h\u00e1 convers\u00e3o de calor em trabalho.<\/b><\/span><\/span><\/span><\/p>\n

B)\u00a0<\/b><\/span><\/span><\/span>ao passar de D para A, o trabalho realizado pelo g\u00e1s \u00e9 positivo.<\/b><\/span><\/span><\/span><\/p>\n

C)\u00a0<\/b><\/span><\/span><\/span>ao passar de B para C, o trabalho realizado pelo g\u00e1s \u00e9 positivo.<\/b><\/span><\/span><\/span><\/p>\n

D)\u00a0<\/b><\/span><\/span><\/span>a quantidade de calor recebida pelo g\u00e1s \u00e9 numericamente igual \u00e0 \u00e1rea do quadril\u00e1tero ABCD.<\/b><\/span><\/span><\/span><\/p>\n

E)\u00a0<\/b><\/span><\/span><\/span>se o ciclo for percorrido em sentido hor\u00e1rio, o sistema realiza trabalho sobre o g\u00e1s.<\/b><\/span><\/span><\/span><\/p>\n

16-(UFAM-AM-2019)<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

<\/p>\n

17-(UFRR-RR-019)<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

<\/p>\n

18-(CEDERJ-RJ-2019)<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

Duas amostras de g\u00e1s est\u00e3o em um recipiente r\u00edgido isolado termicamente do exterior e com duas c\u00e2maras separadas por uma parede que tamb\u00e9m \u00e9 r\u00edgida.<\/b><\/span><\/span><\/span>\u00a0O\u00a0<\/b><\/span><\/span><\/span>g\u00e1s na primeira c\u00e2mara\u00a0<\/b><\/span><\/span><\/span>est\u00e1 a<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

uma\u00a0<\/b><\/span><\/span><\/span>temperatura menor que o g\u00e1s na segunda c\u00e2mara.<\/b><\/span><\/span><\/span>\u00a0Lentamente, a\u00a0<\/b><\/span><\/span><\/span>parede r\u00edgida permite a passagem de calor levando a uma situa\u00e7\u00e3o de equil\u00edbrio t\u00e9rmico entre as c\u00e2maras.\u00a0<\/b><\/span><\/span><\/span>A\u00a0<\/b><\/span><\/span><\/span>varia\u00e7\u00e3o de energia interna do g\u00e1s na primeira c\u00e2mara, \u0394U, e o calor recebido por ele, Q, t\u00eam seus sinais descritos por<\/b><\/span><\/span><\/span><\/p>\n

(A)\u00a0<\/b><\/span><\/span><\/span>\u0394U > 0 e Q > 0\u00a0<\/b><\/span><\/span><\/span>(B)\u00a0<\/b><\/span><\/span><\/span>\u0394U > 0 e Q < 0\u00a0<\/b><\/span><\/span><\/span>(C)\u00a0<\/b><\/span><\/span><\/span>\u0394U < 0 e Q > 0\u00a0<\/b><\/span><\/span><\/span>(D)\u00a0<\/b><\/span><\/span><\/span>\u0394U < 0 e Q < 0<\/b><\/span><\/span><\/span><\/p>\n

Calor<\/b><\/span><\/span><\/span><\/p>\n

19-URCA-CE-019)<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

<\/p>\n

A)<\/b><\/span><\/span><\/span>Todo calor produzido pela gasolina \u00e9 transformado em energia mec\u00e2nica para movimentar as rodas.<\/b><\/span><\/span><\/span><\/p>\n

B)\u00a0<\/b><\/span><\/span><\/span>O motor de uma moto \u00e9 considerado uma m\u00e1quina t\u00e9rmica e somente uma parte do calor gerado \u00e9 convertido em trabalho mec\u00e2nico.<\/b><\/span><\/span><\/span><\/p>\n

C)\u00a0<\/b><\/span><\/span><\/span>O fluxo de calor no motor a combust\u00e3o interna da moto sempre flui da estrutura mais fria para a estrutura mais quente.<\/b><\/span><\/span><\/span><\/p>\n

D)\u00a0<\/b><\/span><\/span><\/span>O rendimento do motor de uma moto pode ser encontrado pela divis\u00e3o entre a temperatura fria Tfria\u00a0e a temperatura quente Tquente.<\/b><\/span><\/span><\/span><\/p>\n

E)\u00a0<\/b><\/span><\/span><\/span>A troca de \u00f3leo periodicamente garante \u00e0 efici\u00eancia total do funcionamento do motor a combust\u00e3o interna da moto<\/b><\/span><\/span><\/span><\/p>\n

20-(UECE-CE-019)<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

Considere\u00a0<\/b><\/span><\/span><\/span>um g\u00e1s ideal que sofre uma compress\u00e3o pela realiza\u00e7\u00e3o de trabalho\u00a0<\/b><\/span><\/span><\/span>sobre o\u00a0<\/b><\/span><\/span><\/span>recipiente<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

que o cont\u00e9m. Este trabalho tem a mesma unidade de medida\u00a0<\/b><\/span><\/span><\/span>de<\/b><\/span><\/span><\/span><\/p>\n

A)\u00a0<\/b><\/span><\/span><\/span>raz\u00e3o entre press\u00e3o e volume.<\/b><\/span><\/span><\/span><\/p>\n

B)\u00a0<\/b><\/span><\/span><\/span>produto de press\u00e3o por temperatura.<\/b><\/span><\/span><\/span><\/p>\n

C)\u00a0<\/b><\/span><\/span><\/span>raz\u00e3o entre temperatura e press\u00e3o.<\/b><\/span><\/span><\/span><\/p>\n

D)\u00a0<\/b><\/span><\/span><\/span>produto de press\u00e3o por volume.<\/b><\/span><\/span><\/span><\/p>\n

21-(EsPCEx- AMAN \u2013 SP- RJ \u2013 2018\/19)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

Considere uma\u00a0<\/b><\/span><\/span><\/span>m\u00e1quina t\u00e9rmica X que executa um ciclo termodin\u00e2mico com a realiza\u00e7\u00e3o de<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

trabalho.\u00a0<\/b><\/span><\/span><\/span>O r<\/b><\/span><\/span><\/span>endimento dessa m\u00e1quina \u00e9 de 40% do rendimento de uma m\u00e1quina Y que funciona<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

segundo o ciclo de Carnot, operando entre duas fontes de calor com temperaturas de<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

27 \u00b0C e 327 \u00b0C.\u00a0<\/b><\/span><\/span><\/span>Durante\u00a0<\/b><\/span><\/span><\/span>um ciclo, o calor rejeitado pela m\u00e1quina X para a fonte fria \u00e9 de 500 J,<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

ent\u00e3o o\u00a0<\/b><\/span><\/span><\/span>trabalho realizado neste ciclo \u00e9 de<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

[A]\u00a0<\/b><\/span><\/span><\/span>100 J.\u00a0<\/b><\/span><\/span><\/span>[B]\u00a0<\/b><\/span><\/span><\/span>125 J.\u00a0<\/b><\/span><\/span><\/span>[C]\u00a0<\/b><\/span><\/span><\/span>200 J.\u00a0<\/b><\/span><\/span><\/span>[D]\u00a0<\/b><\/span><\/span><\/span>500 J.\u00a0<\/b><\/span><\/span><\/span>[E]\u00a0<\/b><\/span><\/span><\/span>625 J.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

22- FAMERP \u2013 Conhecimentos espec\u00edficos<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/span><\/p>\n

Um motor funciona obedecendo ao ciclo de Stirling, no qual um\u00a0<\/b><\/span><\/span><\/span>g\u00e1s ideal \u00e9 submetido a duas transforma\u00e7\u00f5es isot\u00e9rmicas, AB e CD, e a duas transforma\u00e7\u00f5es isovolum\u00e9tricas, BC e DA,\u00a0<\/b><\/span><\/span><\/span>como mostra a figura.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

a) Sabendo que a\u00a0<\/b><\/span><\/span><\/span>temperatura<\/b><\/span><\/span><\/span>\u00a0do g\u00e1s na transforma\u00e7\u00e3o\u00a0<\/b><\/span><\/span><\/span>AB \u00e9 327 \u00baC\u00a0<\/b><\/span><\/span><\/span>e que a\u00a0<\/b><\/span><\/span><\/span>press\u00e3o<\/b><\/span><\/span><\/span>\u00a0nos\u00a0<\/b><\/span><\/span><\/span>pontos B e C valem 8,0 \u00d7 105\u00a0Pa e 4,0 \u00d7 105\u00a0Pa<\/b><\/span><\/span><\/span>,\u00a0<\/b><\/span><\/span><\/span>respectivamente<\/b><\/span><\/span><\/span>,\u00a0<\/b><\/span><\/span><\/span>calcule a temperatura do g\u00e1s<\/b><\/span><\/span><\/span>, em kelvins,\u00a0<\/b><\/span><\/span><\/span>durante a transforma\u00e7\u00e3o CD<\/b><\/span><\/span><\/span>.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

b) Sabendo que a\u00a0<\/b><\/span><\/span><\/span>\u00e1rea S sob a curva da transforma\u00e7\u00e3o CD<\/b><\/span><\/span><\/span>, destacada na figura, corresponde a uma\u00a0<\/b><\/span><\/span><\/span>quantidade de energia igual a 3700 J<\/b><\/span><\/span><\/span>, calcule a\u00a0<\/b><\/span><\/span><\/span>quantidade de calor<\/b><\/span><\/span><\/span>, em joules, que o\u00a0<\/b><\/span><\/span><\/span>g\u00e1s<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span>libera nessa transforma\u00e7\u00e3o.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

23-(UNESP \u2013 SP \u2013 018)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

A\u00a0<\/b><\/span><\/span><\/span>figura mostra uma m\u00e1quina t\u00e9rmica\u00a0<\/b><\/span><\/span><\/span>em que a\u00a0<\/b><\/span><\/span><\/span>caldeira funciona como a fonte quente\u00a0<\/b><\/span><\/span><\/span>e o\u00a0<\/b><\/span><\/span><\/span>condensador como a fonte fria.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

a)\u00a0<\/b><\/span><\/span><\/span>Considerando que, a\u00a0<\/b><\/span><\/span><\/span>cada minuto, a caldeira fornece,\u00a0<\/b><\/span><\/span><\/span>por\u00a0<\/b><\/span><\/span><\/span>meio do vapor,\u00a0<\/b><\/span><\/span><\/span>uma\u00a0<\/b><\/span><\/span><\/span>quantidade de calor\u00a0<\/b><\/span><\/span><\/span>igual a\u00a0<\/b><\/span><\/span><\/span>1,6.109\u00a0J\u00a0<\/b><\/span><\/span><\/span>e que o\u00a0<\/b><\/span><\/span><\/span>condensador recebe uma quantidade de calor igual a 1,2.109\u00a0J, calcule<\/b><\/span><\/span><\/span>\u00a0o\u00a0<\/b><\/span><\/span><\/span>rendimento dessa m\u00e1quina t\u00e9rmica.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

b)\u00a0<\/b><\/span><\/span><\/span>Considerando que\u00a0<\/b><\/span><\/span><\/span>6,0 \u00d7 103\u00a0kg de \u00e1gua de refrigera\u00e7\u00e3o fluem\u00a0<\/b><\/span><\/span><\/span>pelo\u00a0<\/b><\/span><\/span><\/span>condensador a cada minuto,\u00a0<\/b><\/span><\/span><\/span>que\u00a0<\/b><\/span><\/span><\/span>essa \u00e1gua sai do condensador\u00a0<\/b><\/span><\/span><\/span>com\u00a0<\/b><\/span><\/span><\/span>temperatura 20 \u00baC acima da temperatura de entrada\u00a0<\/b><\/span><\/span><\/span>e que o\u00a0<\/b><\/span><\/span><\/span>calor espec\u00edfico da \u00e1gua \u00e9 igual a 4,0.103\u00a0J\/(kg<\/b><\/span><\/span><\/span>\u22c5<\/b><\/span><\/span><\/span>\u00baC), calcule\u00a0<\/b><\/span><\/span><\/span>a\u00a0<\/b><\/span><\/span><\/span>raz\u00e3o entre a quantidade de calor retirada pela \u00e1gua de refrigera\u00e7\u00e3o\u00a0<\/b><\/span><\/span><\/span>e a\u00a0<\/b><\/span><\/span><\/span>quantidade de calor recebida pelo condensador.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

24-(Faculdade de Tecnologia Termomec\u00e2nica \u2013 SP<\/b><\/span><\/span><\/span>– 018)\u00a0<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

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25-(UFPR-PR-018)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

Em\u00a0<\/b><\/span><\/span><\/span>Termodin\u00e2mica,<\/b><\/span><\/span><\/span>\u00a0estudamos\u00a0<\/b><\/span><\/span><\/span>processos importantes\u00a0<\/b><\/span><\/span><\/span>que fazem parte de\u00a0<\/b><\/span><\/span><\/span>ciclos utilizados\u00a0<\/b><\/span><\/span><\/span>em\u00a0<\/b><\/span><\/span><\/span>m\u00e1quinas t\u00e9rmicas,\u00a0<\/b><\/span><\/span><\/span>alguns dos quais de\u00a0<\/b><\/span><\/span><\/span>grande relev\u00e2ncia tecnol\u00f3gica, al\u00e9m de cient\u00edfica.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Com\u00a0<\/b><\/span><\/span><\/span>rela\u00e7\u00e3o<\/b><\/span><\/span><\/span>\u00a0ao que\u00a0<\/b><\/span><\/span><\/span>ocorre com um g\u00e1s ideal,\u00a0<\/b><\/span><\/span><\/span>identifique como\u00a0<\/b><\/span><\/span><\/span>verdadeiras (V) ou falsas (F)<\/b><\/span><\/span><\/span>\u00a0as\u00a0<\/b><\/span><\/span><\/span>seguintes afirmativas:<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

( )\u00a0<\/b><\/span><\/span><\/span>Em todo\u00a0<\/b><\/span><\/span><\/span>processo isovolum\u00e9trico,\u00a0<\/b><\/span><\/span><\/span>tamb\u00e9m chamado\u00a0<\/b><\/span><\/span><\/span>de isoc\u00f3rico,\u00a0<\/b><\/span><\/span><\/span>o\u00a0<\/b><\/span><\/span><\/span>trabalho realizado pelo g\u00e1s \u00e9 nulo.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

( )\u00a0<\/b><\/span><\/span><\/span>Em todo\u00a0<\/b><\/span><\/span><\/span>processo adiab\u00e1tico,\u00a0<\/b><\/span><\/span><\/span>a\u00a0<\/b><\/span><\/span><\/span>energia interna do g\u00e1s \u00e9 constante.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

( )\u00a0<\/b><\/span><\/span><\/span>Em todo\u00a0<\/b><\/span><\/span><\/span>processo isob\u00e1rico, n\u00e3o h\u00e1 trocas de calor entre o g\u00e1s e o meio externo.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

( )\u00a0<\/b><\/span><\/span><\/span>Em todo\u00a0<\/b><\/span><\/span><\/span>processo isot\u00e9rmico,\u00a0<\/b><\/span><\/span><\/span>a\u00a0<\/b><\/span><\/span><\/span>temperatura do g\u00e1s aumenta\u00a0<\/b><\/span><\/span><\/span>quando h\u00e1 realiza\u00e7\u00e3o de trabalho sobre ele.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Assinale a alternativa que apresenta a sequ\u00eancia correta, de cima para baixo.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

a) V \u2013 V \u2013 V \u2013 V.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

b) F \u2013 V \u2013 F \u2013 F.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

c) F \u2013 V \u2013 F \u2013 V.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

d) F \u2013 F \u2013 V \u2013 F.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

e) V \u2013 F \u2013 F \u2013 F.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

26-(UNIFOR-CE-018)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

Observa-se<\/b><\/span><\/span><\/span>\u00a0um\u00a0<\/b><\/span><\/span><\/span>ciclo termodin\u00e2mico\u00a0<\/b><\/span><\/span><\/span>de um\u00a0<\/b><\/span><\/span><\/span>g\u00e1s ideal apresentado na figura a seguir<\/b><\/span><\/span><\/span>.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

Com\u00a0<\/b><\/span><\/span><\/span>rela\u00e7\u00e3o ao comportamento do g\u00e1s,\u00a0<\/b><\/span><\/span><\/span>\u00e9\u00a0<\/b><\/span><\/span><\/span>correto afirmar\u00a0<\/b><\/span><\/span><\/span>que<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

(A)\u00a0<\/b><\/span><\/span><\/span>no processo BC a temperatura \u00e9 constante.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

(B)\u00a0<\/b><\/span><\/span><\/span>o trabalho realizado no processo AB \u00e9 nulo.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

(C)\u00a0<\/b><\/span><\/span><\/span>o calor transferido no processo DA \u00e9 nulo.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

(D)\u00a0<\/b><\/span><\/span><\/span>o trabalho realizado no processo CD \u00e9 negativo.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

(E)\u00a0<\/b><\/span><\/span><\/span>a quantidade de calor no processo CD \u00e9 igual a varia\u00e7\u00e3o da energia interna.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

27-Universidade Estadual de Ci\u00eancias da Sa\u00fade de Alagoas (UNCISAL-018)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

\"Termodin\u00e2mica\"<\/p>\n

<\/h3>\n

Confira a resolu\u00e7\u00e3o comentada<\/a><\/p>\n

 <\/p>\n

Clique aqui para ver sobre o tema!<\/a><\/p>\n

Confira as v\u00eddeo aulas!<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Termodin\u00e2mica Transforma\u00e7\u00f5es gasosas   01-(CEDERJ-RJ-2018) Uma\u00a0amostra de um g\u00e1s ideal ocupa, inicialmente, um volume V0,\u00a0sendo sua\u00a0temperatura T0\u00a0e\u00a0press\u00e3o 3P0. O\u00a0g\u00e1s sofre uma transforma\u00e7\u00e3o\u00a0em\u00a0duas etapas. Na\u00a0primeira etapa, a press\u00e3o do g\u00e1s passa de 3P0\u00a0para 2P0\u00a0mantendo o\u00a0volume do g\u00e1s constante igual a V0\u00a0e\u00a0atingindo a temperatura final T1. Na\u00a0segunda etapa,\u00a0o\u00a0volume do g\u00e1s muda para 2V0,\u00a0mantendo\u00a0press\u00e3o do g\u00e1s constante em 2P0\u00a0e\u00a0atingindo a temperatura final T2.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":3404,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-4931","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4931","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/comments?post=4931"}],"version-history":[{"count":4,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4931\/revisions"}],"predecessor-version":[{"id":9948,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4931\/revisions\/9948"}],"up":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/3404"}],"wp:attachment":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/media?parent=4931"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}