{"id":353,"date":"2015-01-06T19:38:24","date_gmt":"2015-01-06T19:38:24","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=353"},"modified":"2024-09-02T16:41:13","modified_gmt":"2024-09-02T16:41:13","slug":"exercicios-da-cefet-mg-2015","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/universidades-2015\/exercicios-da-cefet-mg-2015\/","title":{"rendered":"Exerc\u00edcios da CEFET MG 2015"},"content":{"rendered":"

\"\"<\/p>\n

O\u00a0Centro Federal de Educa\u00e7\u00e3o Tecnol\u00f3gica de Minas Gerais (CEFET – MG)\u00a0\u00e9 uma autarquia federal\u00a0brasileira, vinculada ao\u00a0Minist\u00e9rio da Educa\u00e7\u00e3o, que oferece cursos de\u00a0ensino m\u00e9dio,\u00a0ensino t\u00e9cnico,\u00a0gradua\u00e7\u00e3o,\u00a0p\u00f3s-gradua\u00e7\u00e3o\u00a0stricto sensu\u00a0elato sensu, contemplando tamb\u00e9m, de forma indissociada, o ensino, a pesquisa e a extens\u00e3o, na \u00e1rea tecnol\u00f3gica e no \u00e2mbito da pesquisa aplicada.<\/b><\/span><\/span><\/span><\/p>\n

Os campi I, II e VI localizam-se na\u00a0Avenida Amazonas, em\u00a0Belo Horizonte. Os outroscampi\u00a0(ou\u00a0Unidades de Ensino Descentralizadas – UNEDs) localizam-se no interior do estado de\u00a0Minas Gerais, nas cidades de\u00a0Leopoldina,\u00a0Arax\u00e1,\u00a0Divin\u00f3polis,\u00a0Varginha,Tim\u00f3teo,\u00a0Nepomuceno,\u00a0Curvelo\u00a0e\u00a0Contagem.<\/b><\/span><\/span><\/span><\/p>\n

Ap\u00f3ia tamb\u00e9m dois centros de ensino t\u00e9cnico (CET), que s\u00e3o mantidos pelas prefeituras de\u00a0Itabirito\u00a0e\u00a0Contagem.<\/b><\/span><\/span><\/span><\/p>\n

Em\u00a02011, ocupou o segundo e terceiro lugar do ranking nacional de institui\u00e7\u00f5es de ensino superior entre as 10 mais concorridas do Brasil no Sistema de Sele\u00e7\u00e3o Unificada (Sisu),\u00a0sendo que, neste mesmo ano o Sisu apresentou 2.020 milh\u00f5es de inscri\u00e7\u00f5es.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

01-(CEFET-MG-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>proj\u00e9til <\/b><\/span><\/span><\/span>de massa <\/b><\/span><\/span><\/span>m <\/b><\/i><\/span><\/span><\/span>= 10,0 g <\/b><\/span><\/span><\/span>viaja a uma <\/b><\/span><\/span><\/span>velocidade<\/b><\/span><\/span><\/span> de <\/b><\/span><\/span><\/span>1,00 km\/s <\/b><\/span><\/span><\/span>e atinge um <\/b><\/span><\/span><\/span>bloco de madeira <\/b><\/span><\/span><\/span>de <\/b><\/span><\/span><\/span>massa <\/b><\/span><\/span><\/span>M <\/b><\/i><\/span><\/span><\/span>= 2,00 kg<\/b><\/span><\/span><\/span>, em <\/b><\/span><\/span><\/span>repouso<\/b><\/span><\/span><\/span>, sobre uma superf\u00edcie <\/b><\/span><\/span><\/span>sem atrito<\/b><\/span><\/span><\/span>, conforme mostra a <\/b><\/span><\/span><\/span>figura.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Considerando-se que a <\/b><\/span><\/span><\/span>colis\u00e3o<\/b><\/span><\/span><\/span> entre o <\/b><\/span><\/span><\/span>proj\u00e9til e o bloco <\/b><\/span><\/span><\/span>seja <\/b><\/span><\/span><\/span>perfeitamente inel\u00e1stica <\/b><\/span><\/span><\/span>e desprezando-se todas as <\/b><\/span><\/span><\/span>for\u00e7as resistivas<\/b><\/span><\/span><\/span>, o <\/b><\/span><\/span><\/span>valor<\/b><\/span><\/span><\/span> aproximado da <\/b><\/span><\/span><\/span>dist\u00e2ncia<\/b><\/span><\/span><\/span>d <\/b><\/i><\/span><\/span><\/span>percorrida <\/b><\/span><\/span><\/span>pelo <\/b><\/span><\/span><\/span>bloco sobre a rampa, em metros, \u00e9<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

02-(CEFET-MG-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

A <\/b><\/span><\/span><\/span>figura <\/b><\/span><\/span><\/span>mostra um <\/b><\/span><\/span><\/span>bloco <\/b><\/span><\/span><\/span>D<\/b><\/i><\/span><\/span><\/span> <\/b><\/i>de massa <\/b><\/span><\/span><\/span>0,50 kg <\/b><\/span><\/span><\/span>preso a uma corda <\/b><\/span><\/span><\/span>inextens\u00edvel <\/b><\/span><\/span><\/span>que passa por uma <\/b><\/span><\/span><\/span>roldana<\/b><\/span><\/span><\/span>. A <\/b><\/span><\/span><\/span>outra extremidade <\/b><\/span><\/span><\/span>da corda est\u00e1 presa \u00e0 <\/b><\/span><\/span><\/span>barra <\/b><\/span><\/span><\/span>CA <\/b><\/i><\/span><\/span><\/span>que pode <\/b><\/span><\/span><\/span>girar<\/b><\/span><\/span><\/span> em torno do eixo fixado \u00e0 <\/b><\/span><\/span><\/span>parede<\/b><\/span><\/span><\/span>. Desprezando-se as for\u00e7as de atrito e as <\/b><\/span><\/span><\/span>massas da corda, da barra <\/b><\/span><\/span><\/span>e da roldana, <\/b><\/span><\/span><\/span>torna-se poss\u00edvel <\/b><\/span><\/span><\/span>movimentar o bloco<\/b><\/span><\/span><\/span>B<\/b><\/i><\/span><\/span><\/span>, de 2,0 kg, <\/b><\/span><\/span><\/span>ao longo da barra horizontal.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

A <\/b><\/span><\/span><\/span>posi\u00e7\u00e3o <\/b><\/span><\/span><\/span>X<\/b><\/i><\/span><\/span><\/span>, em cm, do <\/b><\/span><\/span><\/span>bloco <\/b><\/span><\/span><\/span>B<\/b><\/i><\/span><\/span><\/span> <\/b><\/i>para manter o <\/b><\/span><\/span><\/span>sistema em equil\u00edbrio est\u00e1tico <\/b><\/span><\/span><\/span>\u00e9<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

03-(CEFET-MG-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

A <\/b><\/span><\/span><\/span>figura <\/b><\/span><\/span><\/span>seguinte mostra <\/b><\/span><\/span><\/span>dois corpos 1 e 2 id\u00eanticos<\/b><\/span><\/span><\/span>, em <\/b><\/span><\/span><\/span>repouso<\/b><\/span><\/span><\/span>, completamente <\/b><\/span><\/span><\/span>imersos<\/b><\/span><\/span><\/span> em recipientes com o <\/b><\/span><\/span><\/span>mesmo l\u00edquido, pr\u00f3ximos \u00e0 <\/b><\/span><\/span><\/span>superf\u00edcie da Terra e da Lua<\/b><\/span><\/span><\/span>, respectivamente<\/b><\/span><\/span><\/span>.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Se <\/b><\/span><\/span><\/span>T<\/b><\/i><\/span><\/span><\/span>1<\/b><\/span><\/span><\/sub><\/span> e <\/b><\/span><\/span><\/span>T<\/b><\/i><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sub><\/span> <\/b>s\u00e3o as <\/b><\/span><\/span><\/span>tens\u00f5es<\/b><\/span><\/span><\/span> nos fios, <\/b><\/span><\/span><\/span>P<\/b><\/i><\/span><\/span><\/span>1<\/b><\/span><\/span><\/sub><\/span> e <\/b><\/span><\/span><\/span>P<\/b><\/i><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sub><\/span> <\/b>os <\/b><\/span><\/span><\/span>pesos <\/b><\/span><\/span><\/span>dos corpos e <\/b><\/span><\/span><\/span>F<\/b><\/i><\/span><\/span><\/span>1<\/b><\/span><\/span><\/sub><\/span> e <\/b><\/span><\/span><\/span>F<\/b><\/i><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sub><\/span> <\/b>as for\u00e7as de <\/b><\/span><\/span><\/span>empuxo <\/b><\/span><\/span><\/span>que agem sobre esses corpos, ent\u00e3o \u00e9 <\/b><\/span><\/span><\/span>correto<\/b><\/span><\/span><\/span> <\/b>afirmar que<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

04-(CEFET-MG-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>estudante <\/b><\/span><\/span><\/span>utilizou uma <\/b><\/span><\/span><\/span>mola <\/b><\/span><\/span><\/span>de <\/b><\/span><\/span><\/span>constante el\u00e1stica <\/b><\/span><\/span><\/span>k<\/b><\/i><\/span><\/span><\/span> <\/b><\/i>e um <\/b><\/span><\/span><\/span>bloco de massa <\/b><\/span><\/span><\/span>m<\/b><\/i><\/span><\/span><\/span> <\/b><\/i>para montar <\/b><\/span><\/span><\/span>dois <\/b><\/span><\/span><\/span>experimentos conforme ilustra a figura.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Inicialmente,<\/b><\/span><\/span><\/span> o sistema foi colocado para oscilar na <\/b><\/span><\/span><\/span>vertical e a frequ\u00eancia observada foi <\/b><\/span><\/span><\/span>f<\/b><\/i><\/span><\/span><\/span>. <\/b><\/span><\/span><\/span>Ao montar o sistema no <\/b><\/span><\/span><\/span>plano inclinado<\/b><\/span><\/span><\/span> e com atrito desprez\u00edvel, a<\/b><\/span><\/span><\/span>frequ\u00eancia<\/b><\/span><\/span><\/span> de oscila\u00e7\u00e3o observada foi<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

05-(CEFET-MG-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

A <\/b><\/span><\/span><\/span>FIG. 1(a) <\/b><\/span><\/span><\/span>mostra como <\/b><\/span><\/span><\/span>duas barras de <\/b><\/span><\/span><\/span>materiais diferentes <\/b><\/span><\/span><\/span>est\u00e3o<\/b><\/span><\/span><\/span> <\/b>fixas entre si e a um suporte e a <\/b><\/span><\/span><\/span>FIG. 1(b) <\/b><\/span><\/span><\/span>mostra essas <\/b><\/span><\/span><\/span>mesmas barras<\/b><\/span><\/span><\/span>,<\/b><\/span><\/span><\/span> <\/b>ap\u00f3s terem sofrido uma<\/b><\/span><\/span><\/span>varia\u00e7\u00e3o de temperatura \u2206<\/b><\/span><\/span><\/span>T<\/b><\/i><\/span><\/span><\/span>.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Sabendo-se que os <\/b><\/span><\/span><\/span>coeficientes m\u00e9dios de expans\u00e3o linear dessas barras s\u00e3o <\/b><\/span><\/span><\/span>\u03b1<\/b><\/span><\/span><\/span>1<\/b><\/span><\/span><\/sub><\/span> <\/b>e <\/b><\/span><\/span><\/span>\u03b1<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sub><\/span>, \u00e9 <\/b><\/span><\/span><\/span>correto<\/b><\/span><\/span><\/span> afirmar que.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

06-(CEFET-MG-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>material <\/b><\/span><\/span><\/span>possui <\/b><\/span><\/span><\/span>calor espec\u00edfico <\/b><\/span><\/span><\/span>igual a <\/b><\/span><\/span><\/span>1,0 J\/kg \u00b7\u00b0C <\/b><\/span><\/span><\/span>quando est\u00e1 no estado <\/b><\/span><\/span><\/span>s\u00f3lido <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>2,5 J\/kg <\/b><\/span><\/span><\/span>\u00b7 <\/b><\/span><\/span><\/span>\u00b0C <\/b><\/span><\/span><\/span>quando est\u00e1 no estado <\/b><\/span><\/span><\/span>l\u00edquido.<\/b><\/span><\/span><\/span><\/p>\n

Um <\/b><\/span><\/span><\/span>sistema composto por <\/b><\/span><\/span><\/span>0,10 kg <\/b><\/span><\/span><\/span>desse material <\/b><\/span><\/span><\/span>recebe energia <\/b><\/span><\/span><\/span>de forma que sua temperatura <\/b><\/span><\/span><\/span>varia <\/b><\/span><\/span><\/span>segundo o <\/b><\/span><\/span><\/span>gr\u00e1fico <\/b><\/span><\/span><\/span>da figura.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

A <\/b><\/span><\/span><\/span>raz\u00e3o<\/b><\/span><\/span><\/span> entre <\/b><\/span><\/span><\/span>Q<\/b><\/i><\/span><\/span><\/span>1<\/b><\/i><\/span><\/span><\/sub><\/span> e Q<\/b><\/i><\/span><\/span><\/span>2<\/b><\/i><\/span><\/span><\/sub><\/span> <\/b><\/i>\u00e9<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

07-(CEFET-MG-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

A <\/b><\/span><\/span><\/span>figura <\/b><\/span><\/span><\/span>mostra o <\/b><\/span><\/span><\/span>caminho <\/b><\/span><\/span><\/span>percorrido por um <\/b><\/span><\/span><\/span>raio de luz <\/b><\/span><\/span><\/span>que incide consecutivamente sobre a <\/b><\/span><\/span><\/span>interface entre os <\/b><\/span><\/span><\/span>meios 1 e 2 <\/b><\/span><\/span><\/span>e sobre a interface entre <\/b><\/span><\/span><\/span>os meios 2 e 3, <\/b><\/span><\/span><\/span>onde <\/b><\/span><\/span><\/span>\u03b8<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sub><\/span> < \u03b8<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sub><\/span> e <\/b><\/span><\/span><\/span>n<\/b><\/i><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sub><\/span> < <\/b><\/span><\/span><\/span>n<\/b><\/i><\/span><\/span><\/span>1<\/b><\/span><\/span><\/sub><\/span>.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Nessa situa\u00e7\u00e3o <\/b><\/span><\/span><\/span>afirma-se:<\/b><\/span><\/span><\/span><\/p>\n

I.<\/b><\/span><\/span><\/span> <\/b>A velocidade da luz nos meios 1 e 2 \u00e9 a mesma.<\/b><\/span><\/span><\/span><\/p>\n

II. <\/b><\/span><\/span><\/span>O \u00edndice de refra\u00e7\u00e3o do meio 2 \u00e9 o menor dentre os tr\u00eas meios.<\/b><\/span><\/span><\/span><\/p>\n

III. <\/b><\/span><\/span><\/span>A velocidade da luz no meio 1 \u00e9 a menor dentre os tr\u00eas meios.<\/b><\/span><\/span><\/span><\/p>\n

IV. <\/b><\/span><\/span><\/span>O \u00edndice de refra\u00e7\u00e3o do meio 3 \u00e9 menor que o \u00edndice de refra\u00e7\u00e3o do meio 1.<\/b><\/span><\/span><\/span><\/p>\n

S\u00e3o <\/b><\/span><\/span><\/span>corretas apenas as <\/b><\/span><\/span><\/span>afirmativas<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

08-(CEFET-MG-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Na <\/b><\/span><\/span><\/span>figura,<\/b><\/span><\/span><\/span> <\/b>O <\/b><\/i><\/span><\/span><\/span>representa um <\/b><\/span><\/span><\/span>objeto<\/b><\/span><\/span><\/span> no ar e <\/b><\/span><\/span><\/span>I<\/b><\/i><\/span><\/span><\/span>, a sua <\/b><\/span><\/span><\/span>imagem<\/b><\/span><\/span><\/span> produzidapor um <\/b><\/span><\/span><\/span>elemento \u00f3tico simples<\/b><\/span><\/span><\/span>, que pode ser um <\/b><\/span><\/span><\/span>espelho ou uma lente <\/b><\/span><\/span><\/span>colocada sobre a linha tracejada vertical. A <\/b><\/span><\/span><\/span>altura<\/b><\/span><\/span><\/span> dessa <\/b><\/span><\/span><\/span>imagem \u00e9 o <\/b><\/span><\/span><\/span>triplo<\/b><\/span><\/span><\/span> da altura do objeto.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Esse <\/b><\/span><\/span><\/span>elemento \u00f3tico \u00e9 um(a)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

09-(CEFET-MG-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Referindo-se \u00e0 <\/b><\/span><\/span><\/span>intera\u00e7\u00e3o de <\/b><\/span><\/span><\/span>correntes el\u00e9tricas <\/b><\/span><\/span><\/span>com <\/b><\/span><\/span><\/span>campos magn\u00e9ticos<\/b><\/span><\/span><\/span>, assinale <\/b><\/span><\/span><\/span>(<\/b><\/span><\/span><\/span>V<\/b><\/span><\/span><\/span>) <\/b><\/span><\/span><\/span>para as afirmativas <\/b><\/span><\/span><\/span>verdadeiras ou <\/b><\/span><\/span><\/span>(<\/b><\/span><\/span><\/span>F<\/b><\/span><\/span><\/span>), <\/b><\/span><\/span><\/span>para as falsas.<\/b><\/span><\/span><\/span><\/p>\n

I. <\/b><\/span><\/span><\/span>O <\/b><\/span><\/span><\/span>funcionamento de um gerador <\/b><\/span><\/span><\/span>de <\/b><\/span><\/span><\/span>corrente el\u00e9trica <\/b><\/span><\/span><\/span>pode ser explicado pela <\/b><\/span><\/span><\/span>lei de Faraday.<\/b><\/span><\/span><\/span><\/p>\n

II. <\/b><\/span><\/span><\/span>Ao <\/b><\/span><\/span><\/span>girar o eixo de um motor <\/b><\/span><\/span><\/span>de <\/b><\/span><\/span><\/span>corrente cont\u00ednua<\/b><\/span><\/span><\/span>, com as m\u00e3os, ele <\/b><\/span><\/span><\/span>funcionar\u00e1 como um gerador de corrente el\u00e9trica.<\/b><\/span><\/span><\/span><\/p>\n

III.<\/b><\/span><\/span><\/span> Um <\/b><\/span><\/span><\/span>fio<\/b><\/span><\/span><\/span> percorrido por uma <\/b><\/span><\/span><\/span>corrente el\u00e9trica <\/b><\/span><\/span><\/span>e colocado em um <\/b><\/span><\/span><\/span>campo magn\u00e9tico uniforme <\/b><\/span><\/span><\/span>sofrer\u00e1 a a\u00e7\u00e3o de uma <\/b><\/span><\/span><\/span>for\u00e7a magn\u00e9tica<\/b><\/span><\/span><\/span>, <\/b><\/span><\/span><\/span>independente da sua orienta\u00e7\u00e3o no campo.<\/b><\/span><\/span><\/span><\/p>\n

A <\/b><\/span><\/span><\/span>afirmativa<\/b><\/span><\/span><\/span> <\/b>correta <\/b><\/span><\/span><\/span>encontrada \u00e9<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>V, V, F. <\/b><\/span><\/span><\/span>b) <\/b><\/span><\/span><\/span><\/span>V, F, V. <\/b><\/span><\/span><\/span><\/span>c)<\/b><\/span><\/span><\/span><\/span> <\/b>F, V, V. <\/b><\/span><\/span><\/span><\/span>d) <\/b><\/span><\/span><\/span><\/span>F, F, V. <\/b><\/span><\/span><\/span><\/span>e) <\/b><\/span><\/span><\/span>F, V, F.<\/b><\/span><\/span><\/span><\/p>\n

10-(CEFET-MG-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Analise o circuito el\u00e9trico<\/b><\/span><\/span><\/span> de um <\/b><\/span><\/span><\/span>chuveiro<\/b><\/span><\/span><\/span> com as op\u00e7\u00f5es <\/b><\/span><\/span><\/span>“quente” e “morno”.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Nessas condi\u00e7\u00f5es, <\/b><\/span><\/span><\/span>afirma-se:<\/b><\/span><\/span><\/span><\/p>\n

I. <\/b><\/span><\/span><\/span>A <\/b><\/span><\/span><\/span>chave <\/b><\/span><\/span><\/span>C <\/b><\/i><\/span><\/span><\/span>na posi\u00e7\u00e3o <\/b><\/span><\/span><\/span>1<\/b><\/span><\/span><\/span> <\/b>corresponde a <\/b><\/span><\/span><\/span>\u00e1gua quente.<\/b><\/span><\/span><\/span><\/p>\n

II. <\/b><\/span><\/span><\/span>A <\/b><\/span><\/span><\/span>chave <\/b><\/span><\/span><\/span>C<\/b><\/i><\/span><\/span><\/span> <\/b><\/i>na posi\u00e7\u00e3o <\/b><\/span><\/span><\/span>“morno” <\/b><\/span><\/span><\/span>corresponde a uma <\/b><\/span><\/span><\/span>corrente de 13,75 A.<\/b><\/span><\/span><\/span><\/p>\n

III. <\/b><\/span><\/span><\/span>A <\/b><\/span><\/span><\/span>chave <\/b><\/span><\/span><\/span>C<\/b><\/i><\/span><\/span><\/span> <\/b><\/i>na posi\u00e7\u00e3o <\/b><\/span><\/span><\/span>2 <\/b><\/span><\/span><\/span>corresponde a um <\/b><\/span><\/span><\/span>consumo de aproximadamente <\/b><\/span><\/span><\/span>3000 W.<\/b><\/span><\/span><\/span><\/p>\n

IV. <\/b><\/span><\/span><\/span>A <\/b><\/span><\/span><\/span>chave <\/b><\/span><\/span><\/span>C <\/b><\/i><\/span><\/span><\/span>na posi\u00e7\u00e3o <\/b><\/span><\/span><\/span>“quente<\/b><\/span><\/span><\/span>” <\/b><\/span><\/span><\/span>corresponde a uma <\/b><\/span><\/span><\/span>diferen\u00e7a de potencial de 110 V em cada resistor.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

 <\/p>\n

Confira a resolu\u00e7\u00e3o comentada<\/span><\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"

O\u00a0Centro Federal de Educa\u00e7\u00e3o Tecnol\u00f3gica de Minas Gerais (CEFET – MG)\u00a0\u00e9 uma autarquia federal\u00a0brasileira, vinculada ao\u00a0Minist\u00e9rio da Educa\u00e7\u00e3o, que oferece cursos de\u00a0ensino m\u00e9dio,\u00a0ensino t\u00e9cnico,\u00a0gradua\u00e7\u00e3o,\u00a0p\u00f3s-gradua\u00e7\u00e3o\u00a0stricto sensu\u00a0elato sensu, contemplando tamb\u00e9m, de forma indissociada, o ensino, a pesquisa e a extens\u00e3o, na \u00e1rea tecnol\u00f3gica e no \u00e2mbito da pesquisa aplicada. Os campi I, II e VI localizam-se na\u00a0Avenida Amazonas, em\u00a0Belo Horizonte. Os outroscampi\u00a0(ou\u00a0Unidades<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":5,"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-353","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/353","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=353"}],"version-history":[{"count":2,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/353\/revisions"}],"predecessor-version":[{"id":358,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/353\/revisions\/358"}],"up":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/5"}],"wp:attachment":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/media?parent=353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}