{"id":717,"date":"2015-05-12T19:05:52","date_gmt":"2015-05-12T19:05:52","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=717"},"modified":"2024-09-03T13:08:50","modified_gmt":"2024-09-03T13:08:50","slug":"exercicios-resolvidos-da-unipar-2015","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/universidades-2015\/exercicios-resolvidos-da-unipar-2015\/","title":{"rendered":"Exerc\u00edcios Resolvidos da UNIPAR 2015"},"content":{"rendered":"

\"\"<\/p>\n

Universidade Paranaense<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>(<\/b><\/span><\/span><\/span>Unipar<\/b><\/span><\/span><\/span>) \u00e9 uma<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>universidade<\/b><\/span><\/span><\/span><\/a>\u00a0<\/b><\/span><\/span><\/span>privada<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>brasileira<\/b><\/span><\/span><\/span><\/a>\u00a0<\/b><\/span><\/span><\/span>no<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Paran\u00e1<\/a>, criada na<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>d\u00e9cada de 1970<\/b><\/span><\/span><\/span><\/a>\u00a0<\/b><\/span><\/span><\/span>, possui campi em<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Umuarama<\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Cascavel<\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Toledo<\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Paranava\u00ed<\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Gua\u00edra<\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Cianorte<\/b><\/span><\/span><\/span><\/a>\u00a0<\/b><\/span><\/span><\/span>e<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Francisco Beltr\u00e3o<\/a>.<\/b><\/span><\/span><\/span><\/p>\n

01-(UNIPAR-PR-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um professor <\/b><\/span><\/span>pegou<\/b><\/span><\/span><\/span> uma <\/b><\/span><\/span>fina placa met\u00e1lica<\/b><\/span><\/span><\/span> e nela recortou um <\/b><\/span><\/span>disco de raio R<\/b><\/span><\/span><\/span>. Em seguida, fez um <\/b><\/span><\/span>anel tamb\u00e9m de raio R com um fio muito fino do mesmo material da placa<\/b><\/span><\/span><\/span>. <\/b><\/span><\/span>Inicialmente<\/b><\/span><\/span><\/span>, todos os corpos encontravam-se <\/b><\/span><\/span>\u00e0 mesma temperatura<\/b><\/span><\/span><\/span> e, nessa situa\u00e7\u00e3o, tanto o disco quanto o anel <\/b><\/span><\/span><\/p>\n

\"\"<\/p>\n

encaixavam-se perfeitamente no orif\u00edcio da placa.Em seguida<\/b><\/span><\/span><\/span>, <\/b><\/span><\/span>a placa, o disco e o anel foram colocados dentro de uma geladeira at\u00e9 alcan\u00e7arem o equil\u00edbrio t\u00e9rmico com ela.<\/b><\/span><\/span><\/span><\/p>\n

Depois de retirar o material da geladeira<\/b><\/span><\/span><\/span>, os alunos que assistiam a experi\u00eancia <\/b><\/span><\/span>puderam<\/b><\/span><\/span><\/span><\/p>\n

perceber:<\/b><\/span><\/span><\/span><\/p>\n

a)<\/b><\/span><\/span><\/span> O disco e o anel n\u00e3o se encaixam mais no orif\u00edcio, pois ambos diminu\u00edram de tamanho.<\/b><\/span><\/span><\/p>\n

b)<\/b><\/span><\/span><\/span> Tanto o disco quanto o anel continuavam encaixando-se no orif\u00edcio na placa.<\/b><\/span><\/span><\/p>\n

c)<\/b><\/span><\/span><\/span> O disco passa pelo orif\u00edcio, mas o anel, n\u00e3o.<\/b><\/span><\/span><\/p>\n

d)<\/b><\/span><\/span><\/span> O anel encaixa-se no orif\u00edcio, mas o disco, n\u00e3o.<\/b><\/span><\/span><\/p>\n

e)<\/b><\/span><\/span><\/span> O disco e o anel n\u00e3o se encaixam mais no orif\u00edcio, pois ambos aumentaram de tamanho.<\/b><\/span><\/span><\/p>\n

02-(UNIPAR-PR-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Uma <\/b><\/span><\/span>boca de fog\u00e3o a g\u00e1s<\/b><\/span><\/span><\/span> de uso dom\u00e9stico fornece uma <\/b><\/span><\/span>pot\u00eancia de 250 cal\/s<\/b><\/span><\/span><\/span>. Supondo que toda a <\/b><\/span><\/span><\/p>\n

\"\"<\/p>\n

energia t\u00e9rmica fornecida \u00e9 transmitida a200 g de \u00e1gua, inicialmente a 30\u00b0C<\/b><\/span><\/span><\/span>, qual ser\u00e1 o <\/b><\/span><\/span>tempo, em segundos, necess\u00e1rio para que a \u00e1gua comece a ferver.<\/b><\/span><\/span><\/span><\/p>\n

Considere a <\/b><\/span><\/span>press\u00e3o atmosf\u00e9rica de 1,0 atm e c<\/b><\/span><\/span><\/span>\u00e1gua<\/b><\/span><\/span><\/sub><\/span> = 1 cal\/g<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sup><\/span>C.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

03-(UNIPAR-PR-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span>motorista<\/b><\/span><\/span><\/span> planeja fazer uma viagem de <\/b><\/span><\/span>200km em tr\u00eas horas.<\/b><\/span><\/span><\/span> Se viajar a <\/b><\/span><\/span>primeira metade do<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

trajeto com <\/b><\/span><\/span>velocidade m\u00e9dia de 60 km\/h e fizer uma parada de 20 minutos<\/b><\/span><\/span><\/span>, na <\/b><\/span><\/span>segunda metade<\/b><\/span><\/span><\/span>,<\/b><\/span><\/span>dever\u00e1 desenvolver uma velocidade m\u00e9dia, em km\/h<\/b><\/span><\/span><\/span>, de:<\/b><\/span><\/span><\/p>\n

\"\"<\/p>\n

04-(UNIPAR-PR-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span>barco de comprimento L = 80 m<\/b><\/span><\/span><\/span>, navegando no <\/b><\/span><\/span>sentido da correnteza<\/b><\/span><\/span><\/span> de um rio, passa sob uma <\/b><\/span><\/span>ponte de largura D = 25 m<\/b><\/span><\/span><\/span>. Sabendo-se quea <\/b><\/span><\/span>velocidade do barco em rela\u00e7\u00e3o ao rio \u00e9 V<\/b><\/span><\/span><\/span>B<\/b><\/span><\/span><\/sub><\/span> =14 km\/h<\/b><\/span><\/span><\/span>, e<\/b><\/span><\/span><\/p>\n

\"\"<\/p>\n

a <\/b><\/span><\/span>velocidade do rio em rela\u00e7\u00e3o \u00e0s margens \u00e9 V<\/b><\/span><\/span><\/span>R<\/b><\/span><\/span><\/sub><\/span> = 4 km\/h<\/b><\/span><\/span><\/span>, <\/b><\/span><\/span>quanto tempo<\/b><\/span><\/span><\/span>, em segundos, o barco <\/b><\/span><\/span>levar\u00e1 para passar completamente por baixo da ponte:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

05-(UNIPAR-PR-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Na <\/b><\/span><\/span>figura<\/b><\/span><\/span><\/span> a seguir, <\/b><\/span><\/span>F <\/b><\/span><\/span><\/span>\u00e9 uma <\/b><\/span><\/span>fonte de luz extensa <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span>A<\/b><\/span><\/span><\/span> um <\/b><\/span><\/span>anteparo opaco.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Podemos afirmar que <\/b><\/span><\/span>I, II e III s\u00e3o,respectivamente, regi\u00f5es de:<\/b><\/span><\/span><\/span><\/p>\n

a)<\/b><\/span><\/span><\/span> penumbra, penumbra e sombra.<\/b><\/span><\/span><\/p>\n

b)<\/b><\/span><\/span><\/span> sombra, sombra e sombra.<\/b><\/span><\/span><\/p>\n

c)<\/b><\/span><\/span><\/span> sombra, penumbra e sombra.<\/b><\/span><\/span><\/p>\n

d)<\/b><\/span><\/span><\/span> penumbra, sombra e penumbra.<\/b><\/span><\/span><\/p>\n

e)<\/b><\/span><\/span><\/span> sombra, sombra e penumbra.<\/b><\/span><\/span><\/p>\n

 <\/p>\n

Confira a resolu\u00e7\u00e3o comentada.<\/span><\/a><\/h2>\n","protected":false},"excerpt":{"rendered":"

Universidade Paranaense\u00a0(Unipar) \u00e9 uma\u00a0universidade\u00a0privada\u00a0brasileira\u00a0no\u00a0Paran\u00e1, criada na\u00a0d\u00e9cada de 1970\u00a0, possui campi em\u00a0Umuarama,\u00a0Cascavel,\u00a0Toledo,\u00a0Paranava\u00ed,\u00a0Gua\u00edra,\u00a0Cianorte\u00a0e\u00a0Francisco Beltr\u00e3o. 01-(UNIPAR-PR-015) Um professor pegou uma fina placa met\u00e1lica e nela recortou um disco de raio R. Em seguida, fez um anel tamb\u00e9m de raio R com um fio muito fino do mesmo material da placa. Inicialmente, todos os corpos encontravam-se \u00e0 mesma temperatura e, nessa situa\u00e7\u00e3o, tanto o<\/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-717","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/717","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=717"}],"version-history":[{"count":2,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/717\/revisions"}],"predecessor-version":[{"id":721,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/717\/revisions\/721"}],"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=717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}