{"id":926,"date":"2015-06-29T00:35:46","date_gmt":"2015-06-29T00:35:46","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=926"},"modified":"2024-09-02T17:43:12","modified_gmt":"2024-09-02T17:43:12","slug":"exercicios-resolvidos-da-uern","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/universidades-2015\/exercicios-resolvidos-da-uern\/","title":{"rendered":"Exerc\u00edcios resolvidos da UERN 2015"},"content":{"rendered":"

\"\"<\/p>\n

A<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Universidade do Estado do Rio Grande do Norte<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>(UERN<\/b><\/span><\/span><\/span>) \u00e9 uma<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>institui\u00e7\u00e3o p\u00fablica<\/b><\/span><\/span><\/span><\/a>\u00a0<\/b><\/span><\/span><\/span>brasileira<\/b><\/span><\/span><\/span><\/a>\u00a0<\/b><\/span><\/span><\/span>de<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>ensino superior<\/b><\/span><\/span><\/span><\/a>\u00a0<\/b><\/span><\/span><\/span>mantida pelo governo do estado do<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Rio Grande do Norte<\/b><\/span><\/span><\/span><\/a>. Fundada no ano de<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>1968<\/b><\/span><\/span><\/span><\/a>, est\u00e1 sediada na cidade de<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Mossor\u00f3<\/b><\/span><\/span><\/span><\/a>. Segunda maior universidade estadual da regi\u00e3o Nordeste, a institui\u00e7\u00e3o possui campi avan\u00e7ados em<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Natal<\/b><\/span><\/span><\/span><\/a>\u00a0<\/b><\/span><\/span><\/span>(capital do estado),<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Assu<\/b><\/span><\/span><\/span><\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Pau dos Ferros<\/b><\/span><\/span><\/span><\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Patu<\/b><\/span><\/span><\/span><\/a>\u00a0<\/b><\/span><\/span><\/span>e<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Caic\u00f3<\/b><\/span><\/span><\/span><\/a>. Possui tamb\u00e9m n\u00facleos avan\u00e7ados nas cidades de<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Alexandria<\/b><\/span><\/span><\/span><\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Areia Branca<\/b><\/span><\/span><\/span><\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Apodi<\/b><\/span><\/span><\/span><\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Cara\u00fabas<\/b><\/span><\/span><\/span><\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Jo\u00e3o C\u00e2mara<\/b><\/span><\/span><\/span><\/a>,<\/b><\/span><\/span><\/span>Macau<\/b><\/span><\/span><\/span><\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Nova Cruz<\/b><\/span><\/span><\/span><\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Santa Cruz<\/b><\/span><\/span><\/span><\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>S\u00e3o Miguel<\/b><\/span><\/span><\/span><\/a>,<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Touros<\/b><\/span><\/span><\/span><\/a>, e<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>Umarizal<\/b><\/span><\/span><\/span><\/a>.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

01-(UERN-RN-015)<\/b><\/span><\/span><\/span><\/b><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>garoto<\/b><\/span><\/span><\/span> que se encontra em uma <\/b><\/span><\/span><\/span>quadra coberta solta um bal\u00e3o<\/b><\/span><\/span><\/span> com g\u00e1s h\u00e9lio e este passa a se <\/b><\/span><\/span><\/span>deslocar em movimento retil\u00edneo uniforme com velocidade de 2 m\/s.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Ao <\/b><\/span><\/span><\/span>atingir o teto da quadra<\/b><\/span><\/span><\/span>, o bal\u00e3o <\/b><\/span><\/span><\/span>estoura e o som do estouro atinge o ouvido do garoto 5,13 s ap\u00f3s<\/b><\/span><\/span><\/span> <\/b>ele o ter soltado.<\/b><\/span><\/span><\/span><\/p>\n

Se o bal\u00e3o foi <\/b><\/span><\/span><\/span>solto na altura do ouvido do garoto<\/b><\/span><\/span><\/span>, ent\u00e3o a <\/b><\/span><\/span><\/span>dist\u00e2ncia percorrida por ele at\u00e9 o instante em que estourou foi de<\/b><\/span><\/span><\/span><\/p>\n

(Considere a <\/b><\/i><\/span><\/span><\/span>velocidade do som = 340 m\/s.)<\/b><\/i><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

02-(UERN-RN-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Dois <\/b><\/span><\/span><\/span>exaustores e\u00f3licos<\/b><\/span><\/span><\/span> instalados no <\/b><\/span><\/span><\/span>telhado<\/b><\/span><\/span><\/span> de um galp\u00e3o se encontram em <\/b><\/span><\/span><\/span>movimento circular<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

uniforme <\/b><\/span><\/span><\/span>com <\/b><\/span><\/span><\/span>frequ\u00eancias iguais a 2,0 Hz e 2,5 Hz.<\/b><\/span><\/span><\/span> A <\/b><\/span><\/span><\/span>diferen\u00e7a entre os per\u00edodos<\/b><\/span><\/span><\/span> desses dois movimentos <\/b><\/span><\/span><\/span>\u00e9 igual<\/b><\/span><\/span><\/span> a<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

03-(UERN-RN-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

A <\/b><\/span><\/span><\/span>temperatura interna<\/b><\/span><\/span><\/span> de um <\/b><\/span><\/span><\/span>forno el\u00e9trico<\/b><\/span><\/span><\/span> foi registrada em <\/b><\/span><\/span><\/span>dois instantes<\/b><\/span><\/span><\/span> consecutivos por<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

term\u00f4metros distintos<\/b><\/span><\/span><\/span> \u2013 o primeiro <\/b><\/span><\/span><\/span>graduado na escala <\/b><\/span><\/span><\/span>Celsius <\/b><\/i><\/span><\/span><\/span>e o segundo na escala <\/b><\/span><\/span><\/span>Kelvin<\/b><\/i><\/span><\/span><\/span>.<\/b><\/span><\/span><\/span><\/p>\n

Os valores obtidos foram, respectivamente, iguais a <\/b><\/span><\/span><\/span>120\u00b0C e 438 K.<\/b><\/span><\/span><\/span> Essa <\/b><\/span><\/span><\/span>varia\u00e7\u00e3o de temperatura<\/b><\/span><\/span><\/span> expressa em <\/b><\/span><\/span><\/span>Fahrenheit <\/b><\/i><\/span><\/span><\/span>corresponde a<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

04-(UERN-RN-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

O <\/b><\/span><\/span><\/span>per\u00edodo<\/b><\/span><\/span><\/span> da onda peri\u00f3dica a seguir \u00e9 <\/b><\/span><\/span><\/span>2,5 s.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\u00c9 <\/b><\/span><\/span><\/span>correto<\/b><\/span><\/span><\/span> afirmar que a <\/b><\/span><\/span><\/span>velocidade<\/b><\/span><\/span><\/span> de propaga\u00e7\u00e3o dessa onda \u00e9<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

05-(UERN-RN-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

O <\/b><\/span><\/span><\/span>sistema<\/b><\/span><\/span><\/span> a seguir apresenta <\/b><\/span><\/span><\/span>acelera\u00e7\u00e3o de 2 m\/s<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sup><\/span> e a tra\u00e7\u00e3o no fio \u00e9 igual a 72 N.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Considere que a <\/b><\/span><\/span><\/span>massa de A \u00e9 maior que a massa de B<\/b><\/span><\/span><\/span>, o fio \u00e9 inextens\u00edvel e n\u00e3o h\u00e1 atrito na polia. A <\/b><\/span><\/span><\/span>diferen\u00e7a entre as massas desses dois corpos<\/b><\/span><\/span><\/span> \u00e9 igual a<\/b><\/span><\/span><\/span><\/p>\n

(Considere g = 10 m\/s<\/b><\/i><\/span><\/span><\/span>2<\/b><\/i><\/span><\/span><\/sup><\/span>)<\/b><\/i><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

06-(UERN-RN-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Ao posicionar um <\/b><\/span><\/span><\/span>objeto<\/b><\/span><\/span><\/span> em frente a um <\/b><\/span><\/span><\/span>espelho c\u00f4ncavo<\/b><\/span><\/span><\/span> obteve-se uma <\/b><\/span><\/span><\/span>imagem virtual.<\/b><\/span><\/span><\/span> \u00c9 <\/b><\/span><\/span><\/span>correto<\/b><\/span><\/span><\/span><\/p>\n

afirmar que <\/b><\/span><\/span><\/span>a imagem em quest\u00e3o<\/b><\/span><\/span><\/span> tamb\u00e9m \u00e9<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

07-(UERN-RN-015)<\/b><\/span><\/span><\/span><\/p>\n

28\"\"<\/b><\/span><\/span><\/span><\/p>\n

Um corpo de <\/b><\/span><\/span><\/span>massa 400 g e volume 60 cm<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sup><\/span> encontra-se <\/b><\/span><\/span><\/span>totalmente imerso<\/b><\/span><\/span><\/span> num aqu\u00e1rio com \u00e1gua<\/b><\/span><\/span><\/span><\/p>\n

apoiado no fundo.<\/b><\/span><\/span><\/span> A <\/b><\/span><\/span><\/span>for\u00e7a normal exercida pelo fundo do aqu\u00e1rio sobre o corpo<\/b><\/span><\/span><\/span> \u00e9 de<\/b><\/span><\/span><\/span><\/p>\n

(Considere: g = 10 m\/s<\/b><\/i><\/span><\/span><\/span>2<\/b><\/i><\/span><\/span><\/sup><\/span> e d\u00e1gua = 1 g\/cm<\/b><\/i><\/span><\/span><\/span>3<\/b><\/i><\/span><\/span><\/sup><\/span>.)<\/b><\/i><\/span><\/span><\/span><\/p>\n

A)<\/b><\/span><\/span><\/span> 2,4 N. <\/b><\/span><\/span><\/span>B)<\/b><\/span><\/span><\/span> 3,4 N. <\/b><\/span><\/span><\/span>C)<\/b><\/span><\/span><\/span> 4,6 N. <\/b><\/span><\/span><\/span>D)<\/b><\/span><\/span><\/span> 5,6 N.<\/b><\/span><\/span><\/span><\/p>\n

08-(UERN-RN-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

O <\/b><\/span><\/span><\/span>gr\u00e1fico<\/b><\/span><\/span><\/span> representa um <\/b><\/span><\/span><\/span>ciclo termodin\u00e2mico:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Os <\/b><\/span><\/span><\/span>trabalhos<\/b><\/span><\/span><\/span> realizados nas <\/b><\/span><\/span><\/span>transforma\u00e7\u00f5es AB, BC, CD e DA s\u00e3o, respectivamente:<\/b><\/span><\/span><\/span><\/p>\n

A)<\/b><\/span><\/span><\/span> Negativo, nulo, positivo e nulo.<\/b><\/span><\/span><\/span><\/p>\n

B)<\/b><\/span><\/span><\/span> Positivo, nulo, negativo e nulo.<\/b><\/span><\/span><\/span><\/p>\n

C)<\/b><\/span><\/span><\/span> Positivo, negativo, nulo e positivo.<\/b><\/span><\/span><\/span><\/p>\n

D)<\/b><\/span><\/span><\/span> Negativo, negativo, nulo e positivo.<\/b><\/span><\/span><\/span><\/p>\n

09-(UERN-RN-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

O <\/b><\/span><\/span><\/span>barulho<\/b><\/span><\/span><\/span> emitido pelo motor de um <\/b><\/span><\/span><\/span>carro de corrida<\/b><\/span><\/span><\/span> que se desloca a <\/b><\/span><\/span><\/span>244,8 km\/h<\/b><\/span><\/span><\/span> \u00e9 percebido por um<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

torcedor <\/b><\/span><\/span><\/span>na arquibancada com <\/b><\/span><\/span><\/span>frequ\u00eancia de 1.200 Hz.<\/b><\/span><\/span><\/span><\/b><\/p>\n

A <\/b><\/span><\/span><\/span>frequ\u00eancia real<\/b><\/span><\/span><\/span> emitida pela fonte sonora considerando que a <\/b><\/span><\/span><\/span>mesma se aproxima do torcedor \u00e9 de<\/b><\/span><\/span><\/span><\/p>\n

(Considere a velocidade do som = 340 m\/s.)<\/b><\/i><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

10-(UERN-RN-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Nos meios <\/b><\/span><\/span><\/span>homog\u00eaneos e transparentes<\/b><\/span><\/span><\/span>, a <\/b><\/span><\/span><\/span>luz se propaga em linha reta.<\/b><\/span><\/span><\/span> <\/b>Essa propriedade<\/b><\/span><\/span><\/span> pode ser<\/b><\/span><\/span><\/span><\/p>\n

evidenciada pelo fen\u00f4meno<\/b><\/span><\/span><\/span> da<\/b><\/span><\/span><\/span><\/p>\n

A)<\/b><\/span><\/span><\/span> difra\u00e7\u00e3o. <\/b><\/span><\/span><\/span>B)<\/b><\/span><\/span><\/span> polariza\u00e7\u00e3o. <\/b><\/span><\/span><\/span>C)<\/b><\/span><\/span><\/span> interfer\u00eancia. <\/b><\/span><\/span><\/span>D)<\/b><\/span><\/span><\/span> forma\u00e7\u00e3o de eclipses.<\/b><\/span><\/span><\/span><\/p>\n

11-(UERN-RN-015)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

A <\/b><\/span><\/span><\/span>resist\u00eancia R<\/b><\/span><\/span><\/span> na <\/b><\/span><\/span><\/span>associa\u00e7\u00e3o de resistores<\/b><\/span><\/span><\/span> a seguir <\/b><\/span><\/span><\/span>\u00e9 igual a<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

 <\/p>\n

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

A\u00a0Universidade do Estado do Rio Grande do Norte\u00a0(UERN) \u00e9 uma\u00a0institui\u00e7\u00e3o p\u00fablica\u00a0brasileira\u00a0de\u00a0ensino superior\u00a0mantida pelo governo do estado do\u00a0Rio Grande do Norte. Fundada no ano de\u00a01968, est\u00e1 sediada na cidade de\u00a0Mossor\u00f3. Segunda maior universidade estadual da regi\u00e3o Nordeste, a institui\u00e7\u00e3o possui campi avan\u00e7ados em\u00a0Natal\u00a0(capital do estado),\u00a0Assu,\u00a0Pau dos Ferros,\u00a0Patu\u00a0e\u00a0Caic\u00f3. Possui tamb\u00e9m n\u00facleos avan\u00e7ados nas cidades de\u00a0Alexandria,\u00a0Areia Branca,\u00a0Apodi,\u00a0Cara\u00fabas,\u00a0Jo\u00e3o C\u00e2mara,Macau,\u00a0Nova Cruz,\u00a0Santa Cruz,\u00a0S\u00e3o Miguel,\u00a0Touros, e\u00a0Umarizal. 01-(UERN-RN-015)<\/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-926","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/926","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=926"}],"version-history":[{"count":4,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/926\/revisions"}],"predecessor-version":[{"id":933,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/926\/revisions\/933"}],"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=926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}