{"id":3090,"date":"2017-06-11T20:14:45","date_gmt":"2017-06-11T20:14:45","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=3090"},"modified":"2024-09-03T17:28:30","modified_gmt":"2024-09-03T17:28:30","slug":"resolucao-comentada-das-questoes-de-fisica-da-unemat-mt-2017","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/universidades-2017\/unemat-2017\/resolucao-comentada-das-questoes-de-fisica-da-unemat-mt-2017\/","title":{"rendered":"Resolu\u00e7\u00e3o comentada das quest\u00f5es de F\u00cdSICA da UNEMAT-MT-2017"},"content":{"rendered":"

Resolu\u00e7\u00e3o comentada das quest\u00f5es de F\u00cdSICA da <\/b><\/span><\/span><\/span><\/p>\n

UNEMAT-MT-2017<\/b><\/span><\/span><\/span><\/p>\n

01- \"\"<\/b><\/span><\/span><\/span><\/p>\n

Fazendo<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>A oscilar,<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>apenas C, por resson\u00e2ncia oscilar\u00e1, pois o comprimento L<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>dos dois fios<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>\u00e9 o mesmo e a acelera\u00e7\u00e3o da gravidade g tamb\u00e9m \u00e9 a mesma.<\/b><\/span><\/span><\/span><\/span><\/p>\n

Observe na <\/b><\/span><\/span>express\u00e3o \"\"<\/b><\/span><\/span> = 2\"\"<\/b><\/span><\/span><\/span> <\/b>que, por <\/b><\/span><\/span><\/span>resson\u00e2ncia, colocando1 para oscilar, apenas 3 o acompanhar\u00e1 com a mesma frequ\u00eancia f<\/b><\/span><\/span><\/span> e <\/b><\/span><\/span><\/span>o mesmo ocorrer\u00e1 com 2 e 4,<\/b><\/span><\/span><\/span> pois o que <\/b><\/span><\/span><\/span>influi \u00e9 apenas o comprimento do fio L e o local g, com a massa m n\u00e3o influindo.<\/b><\/span><\/span><\/span><\/p>\n

R- ?<\/b><\/span><\/span><\/span><\/span><\/p>\n

02- <\/b><\/span><\/span><\/span>\u2206L = L<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sub><\/span>.\"\"<\/b><\/span><\/span><\/span>\u2206\"\"<\/span><\/span><\/span> = 25.<\/b><\/span><\/span><\/span>11×10<\/b><\/span><\/span><\/span>-6<\/b><\/span><\/span><\/sup><\/span>.26 = 7150.10<\/b><\/span><\/span><\/span>-6<\/b><\/span><\/span><\/sup><\/span> <\/b>= 0,00715 m<\/b><\/span><\/span><\/span> \"\" <\/b><\/span><\/span><\/span>\u2206L = 7,15 mm <\/b><\/span><\/span><\/span><\/p>\n

R- D<\/b><\/span><\/span><\/span><\/p>\n

03-\"\"<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

R- B<\/b><\/span><\/span> <\/b><\/p>\n

04- <\/b><\/span><\/span><\/span>V = <\/b><\/span><\/span><\/span>340 m\/sx3,6 <\/b><\/span><\/span><\/span>= 1224 km\/h<\/b><\/span><\/span><\/span><\/p>\n

R- A<\/b><\/span><\/span><\/span><\/p>\n

05- <\/b><\/span><\/span><\/span>Ilhas de calor<\/b><\/span><\/span><\/span> \"\" trata-se de um <\/b><\/span><\/span><\/span>fen\u00f4meno clim\u00e1tico <\/b><\/span><\/span><\/span>que surge <\/b><\/span><\/span><\/span>principalmente nas cidades muito urbanizadas. <\/b><\/span><\/span><\/span><\/p>\n

Nestas cidades<\/b><\/span><\/span><\/span>, a <\/b><\/span><\/span><\/span>temperatura m\u00e9dia costuma ser mais elevada <\/b><\/span><\/span><\/span>do que nas <\/b><\/span><\/span><\/span>regi\u00f5es arborizadas e rurais pr\u00f3ximas.<\/b><\/span><\/span><\/span>
\n<\/b><\/span><\/span><\/span>A cidade <\/b><\/span><\/span><\/span>de S\u00e3o Paulo<\/b><\/span><\/span><\/span> \u00e9 considerada uma <\/b><\/span><\/span><\/span>ilha de calor pois<\/b><\/span><\/span><\/span> esta <\/b><\/span><\/span><\/span>cidade tem grande concentra\u00e7\u00e3o de asfalto (ruas, avenidas) e concreto (pr\u00e9dios, casas e outras constru\u00e7\u00f5es), ela concentra mais calor, <\/b><\/span><\/span><\/span>fazendo com que a <\/b><\/span><\/span><\/span>temperatura fique acima da m\u00e9dia <\/b><\/span><\/span><\/span>do que nas <\/b><\/span><\/span><\/span>regi\u00f5es arborizadas e rurais pr\u00f3ximas.<\/b><\/span><\/span><\/span>
\n<\/b><\/span><\/span><\/span>A <\/b><\/span><\/span><\/span>umidade relativa <\/b><\/span><\/span><\/span>do ar tamb\u00e9m fica <\/b><\/span><\/span><\/span>baixa nestas \u00e1reas.<\/b><\/span><\/span><\/span>
\n\"\"
\n<\/b><\/span><\/span><\/span>Outros fatores <\/b><\/span><\/span><\/span>que <\/b><\/span><\/span><\/span>favorecem o aquecimento da temperatura em S\u00e3o Paulo <\/b><\/span><\/span><\/span>s\u00e3o: <\/b><\/span><\/span><\/span>pouca quantidade de verde (\u00e1rvores e plantas) e alto \u00edndice de polui\u00e7\u00e3o atmosf\u00e9rica.<\/b><\/span><\/span><\/span><\/p>\n

R- B<\/b><\/span><\/span><\/span><\/p>\n

 <\/p>\n

Voltar para os exerc\u00edcios<\/span><\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"

Resolu\u00e7\u00e3o comentada das quest\u00f5es de F\u00cdSICA da UNEMAT-MT-2017 01- Fazendo\u00a0A oscilar,\u00a0apenas C, por resson\u00e2ncia oscilar\u00e1, pois o comprimento L\u00a0dos dois fios\u00a0\u00e9 o mesmo e a acelera\u00e7\u00e3o da gravidade g tamb\u00e9m \u00e9 a mesma. Observe na express\u00e3o = 2 que, por resson\u00e2ncia, colocando1 para oscilar, apenas 3 o acompanhar\u00e1 com a mesma frequ\u00eancia f e o mesmo ocorrer\u00e1 com 2 e<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":3088,"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-3090","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/3090","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=3090"}],"version-history":[{"count":1,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/3090\/revisions"}],"predecessor-version":[{"id":3091,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/3090\/revisions\/3091"}],"up":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/3088"}],"wp:attachment":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/media?parent=3090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}