{"id":562,"date":"2015-03-05T18:00:10","date_gmt":"2015-03-05T18:00:10","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=562"},"modified":"2024-09-02T17:25:17","modified_gmt":"2024-09-02T17:25:17","slug":"exercicios-resolvidos-da-ifmg-2015","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/universidades-2015\/exercicios-resolvidos-da-ifmg-2015\/","title":{"rendered":"Exerc\u00edcios resolvidos da IFMG 2015"},"content":{"rendered":"

\"\"<\/p>\n

O\u00a0Instituto Federal de Educa\u00e7\u00e3o, Ci\u00eancia e Tecnologia de Minas Gerais\u00a0\u00e9 uma institu\u00e7\u00e3o que oferece educa\u00e7\u00e3o superior, b\u00e1sica e profissional, de forma pluricurricular. \u00c9 uma institui\u00e7\u00e3o\u00a0multicampi, especializada na oferta de educa\u00e7\u00e3o profissional e tecnol\u00f3gica nas diferentes modalidades de ensino, com base na conjuga\u00e7\u00e3o de conhecimentos t\u00e9cnicos e tecnol\u00f3gicos \u00e0s suas pr\u00e1ticas pedag\u00f3gicas. Sua Reitoria est\u00e1 sediada em Belo Horizonte-MG<\/b><\/span><\/span><\/span><\/p>\n

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

Reitoria Belo Horizonte<\/b><\/span><\/span><\/span><\/p>\n

Campus\u00a01 – Campus Bambu\u00ed –\u00a0 Campus Betim (implanta\u00e7\u00e3o) – Campus Congonhas – Campus Formiga – Campus Governador Valadares – Campus Ouro Branco – Campus Ouro Preto – EaD P\u00f3lo Alfenas – EaD P\u00f3lo Betim – EaD P\u00f3lo Cachoeira doCampo – EaD P\u00f3lo Cataguases – Campus Ribeir\u00e3o das Neves (previsto) – Campus Sabar\u00e1 (previsto) – Campus S\u00e3o Jo\u00e3o Evangelista\u00a0 —\u00a0 Unidades Conveniadas \u2013 Arcos \u2013 Bom Despacho \u2013 Jo\u00e3o Monlevade \u2013 Pomp\u00e9u \u2013 Piumbi \u2013 Oliveira.<\/b><\/span><\/span><\/span><\/p>\n

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

\"\"<\/p>\n

Tiago escorrega em um piso liso<\/b><\/span><\/span><\/span>. Como sua <\/b><\/span><\/span><\/span>velocidade inicial \u00e9 de 1m\/s<\/b><\/span><\/span><\/span>, ele <\/b><\/span><\/span><\/span>desliza 2s at\u00e9parar<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

completamente<\/b><\/span><\/span><\/span>. Qual o <\/b><\/span><\/span><\/span>valor<\/b><\/span><\/span><\/span> do <\/b><\/span><\/span><\/span>coeficiente de atrito cin\u00e9tico entre o cal\u00e7ado de Tiago e opiso? <\/b><\/span><\/span><\/span>Considere a <\/b><\/span><\/span><\/span>acelera\u00e7\u00e3o da gravidade g = 10m\/s\u00b2<\/b><\/span><\/span><\/span>.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

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

\"\"<\/p>\n

<\/a>Uma<\/b><\/span><\/span><\/span> barra de a\u00e7o possui 15m de comprimento<\/b><\/span><\/span><\/span> quando submetida a uma <\/b><\/span><\/span><\/span>temperatura de 25\u00baC.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Considerando o <\/b><\/span><\/span><\/span>coeficiente de dilata\u00e7\u00e3o linear do a\u00e7o igual a 10<\/b><\/span><\/span><\/span>-5<\/b><\/span><\/span><\/sup><\/span> \u00baC<\/b><\/span><\/span><\/span>-1<\/b><\/span><\/span><\/sup><\/span>, se essa barra for<\/b><\/span><\/span><\/span><\/p>\n

submetida<\/b><\/span><\/span><\/span> a uma <\/b><\/span><\/span><\/span>temperatura de 65\u00baC<\/b><\/span><\/span><\/span>, seu <\/b><\/span><\/span><\/span>comprimento final, em metros, <\/b><\/span><\/span><\/span>ser\u00e1<\/b><\/span><\/span><\/span><\/p>\n

aproximadamente de:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

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

\"\"<\/p>\n

Em um <\/b><\/span><\/span><\/span>processo industrial<\/b><\/span><\/span><\/span> coloca-se <\/b><\/span><\/span><\/span>\u00e1gua e gasolina<\/b><\/span><\/span><\/span> em um recipiente, conforme a figura<\/b><\/span><\/span><\/span><\/p>\n

abaixo.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Considerando <\/b><\/span><\/span><\/span>\u03c1<\/b><\/span><\/span><\/span>\u00e1gua<\/b><\/span><\/span><\/sub><\/span> = 1000 kg\/m\u00b3; \u03c1<\/b><\/span><\/span><\/span>gasolina<\/b><\/span><\/span><\/sub><\/span> = 800 kg\/m\u00b3; g = 10m\/s\u00b2 e p<\/b><\/span><\/span><\/span>atm<\/b><\/span><\/span><\/sub><\/span> = 10<\/b><\/span><\/span><\/span>5<\/b><\/span><\/span><\/sup><\/span> Pa,<\/b><\/span><\/span><\/span> a <\/b><\/span><\/span><\/span>press\u00e3o no<\/b><\/span><\/span><\/span><\/p>\n

ponto (3), em Pa<\/b><\/span><\/span><\/span>, vale:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

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

\"\"<\/p>\n

Uma <\/b><\/span><\/span><\/span>garota com 50kg e 1,60m de altura<\/b><\/span><\/span><\/span> treina salto com vara e <\/b><\/span><\/span><\/span>consegue ultrapassar 4,0m de<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

altura.<\/b><\/span><\/span><\/span> Considerando <\/b><\/span><\/span><\/span>g = 10m\/s<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sup><\/span>, a <\/b><\/span><\/span><\/span>varia\u00e7\u00e3o de energia potencial gravitacional<\/b><\/span><\/span><\/span> da atleta, em <\/b><\/span><\/span><\/span>kJ,<\/b><\/span><\/span><\/span><\/p>\n

ser\u00e1 de:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

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

\"\"<\/p>\n

Fernando<\/b><\/span><\/span><\/span>, ao se <\/b><\/span><\/span><\/span>aproximar<\/b><\/span><\/span><\/span> de uma loja de conveni\u00eancia, observa <\/b><\/span><\/span><\/span>sua pr\u00f3pria imagem <\/b><\/span><\/span><\/span>em um<\/b><\/span><\/span><\/span><\/p>\n

espelho esf\u00e9rico convexo<\/b><\/span><\/span><\/span>. A <\/b><\/span><\/span><\/span>imagem vista por Fernando<\/b><\/span><\/span><\/span> ser\u00e1:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

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

\"\"<\/p>\n

Artur,<\/b><\/span><\/span><\/span> ao realizar uma <\/b><\/span><\/span><\/span>reforma<\/b><\/span><\/span><\/span> em sua casa, foi aconselhado a <\/b><\/span><\/span><\/span>trocar o circuito el\u00e9trico do<\/b><\/span><\/span><\/span><\/p>\n

chuveiro de 127V para 220V<\/b><\/span><\/span><\/span>. Ele comprou um <\/b><\/span><\/span><\/span>chuveiro el\u00e9trico<\/b><\/span><\/span><\/span>, conforme <\/b><\/span><\/span><\/span>indica\u00e7\u00e3o abaixo:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Para fazer a <\/b><\/span><\/span><\/span>nova instala\u00e7\u00e3o<\/b><\/span><\/span><\/span>, ele deve saber que <\/b><\/span><\/span><\/span>disjuntor<\/b><\/span><\/span><\/span> comprar para o <\/b><\/span><\/span><\/span>circuito do chuveiro.<\/b><\/span><\/span><\/span><\/p>\n

O <\/b><\/span><\/span><\/span>valor aproximado da corrente el\u00e9trica, em Amp\u00e8res<\/b><\/span><\/span><\/span>, ser\u00e1 de:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

 <\/p>\n

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

O\u00a0Instituto Federal de Educa\u00e7\u00e3o, Ci\u00eancia e Tecnologia de Minas Gerais\u00a0\u00e9 uma institu\u00e7\u00e3o que oferece educa\u00e7\u00e3o superior, b\u00e1sica e profissional, de forma pluricurricular. \u00c9 uma institui\u00e7\u00e3o\u00a0multicampi, especializada na oferta de educa\u00e7\u00e3o profissional e tecnol\u00f3gica nas diferentes modalidades de ensino, com base na conjuga\u00e7\u00e3o de conhecimentos t\u00e9cnicos e tecnol\u00f3gicos \u00e0s suas pr\u00e1ticas pedag\u00f3gicas. Sua Reitoria est\u00e1 sediada em Belo Horizonte-MG Unidades Reitoria<\/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-562","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/562","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=562"}],"version-history":[{"count":3,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/562\/revisions"}],"predecessor-version":[{"id":567,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/562\/revisions\/567"}],"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=562"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}