{"id":4439,"date":"2019-04-22T01:11:21","date_gmt":"2019-04-22T01:11:21","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=4439"},"modified":"2024-07-11T12:15:08","modified_gmt":"2024-07-11T12:15:08","slug":"uerr-2019","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/universidades-2019\/uerr-2019\/","title":{"rendered":"UERR 2019"},"content":{"rendered":"

\"UERR\"<\/h3>\n

Universidade Estadual de Roraima<\/b><\/span><\/span><\/span>\u00a0(<\/b><\/span><\/span><\/span>UERR<\/b><\/span><\/span><\/span>) \u00e9 uma\u00a0<\/b><\/span><\/span><\/span>institui\u00e7\u00e3o de ensino superior<\/b><\/u><\/span><\/span><\/span><\/a>\u00a0<\/b><\/span><\/span><\/span>p\u00fablica<\/b><\/u><\/span><\/span><\/span><\/a>\u00a0estadual localizada na cidade de\u00a0<\/b><\/span><\/span><\/span>Boa Vista<\/b><\/u><\/span><\/span><\/span><\/a>, capital de\u00a0<\/b><\/span><\/span><\/span>Roraima<\/b><\/u><\/span><\/span><\/span><\/a>. Foi criada pela Lei Complementar N\u00ba 91, de 10 de novembro de 2005.<\/b><\/span><\/span><\/span><\/p>\n

Mantida pelo\u00a0<\/b><\/span><\/span><\/span>Governo<\/b><\/u><\/span><\/span><\/span><\/a>\u00a0estadual, a UERR realiza os\u00a0<\/b><\/span><\/span><\/span>vestibulares<\/b><\/u><\/span><\/span><\/span><\/a>\u00a0anuais no m\u00eas de Dezembro para provimento de vagas. Possui diversas unidades por todo o estado, sendo essa\u00a0<\/b><\/span><\/span><\/span>pol\u00edtica<\/b><\/u><\/span><\/span><\/span><\/a>\u00a0de\u00a0<\/b><\/span><\/span><\/span>interioriza\u00e7\u00e3o<\/b><\/u><\/span><\/span><\/span><\/a>\u00a0do ensino superior uma de suas propostas fundamentais que todavia vem ocorrendo uma reestrutura\u00e7\u00e3o interna, para seja apenas 2 campus polarizados o de Boa Vista e Rorain\u00f3polis \u00a0contando atualmente com seis campi.<\/b><\/span><\/span><\/span><\/p>\n

Em\u00a0<\/b><\/span><\/span><\/span>2018<\/b><\/u><\/span><\/span><\/span><\/a>, a universidade passou a oferecer vagas para o curso de\u00a0<\/b><\/span><\/span><\/span>medicina<\/b><\/u><\/span><\/span><\/span><\/a>.<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

N\u00facleo Boa Vista<\/span><\/span><\/span><\/p>\n

Cursos de\u00a0Administra\u00e7\u00e3o<\/a>,\u00a0Ci\u00eancias Biol\u00f3gicas<\/a>, Ci\u00eancias da Computa\u00e7\u00e3o,\u00a0Ci\u00eancias da Natureza e Matem\u00e1tica<\/a>, Com\u00e9rcio Exterior,\u00a0Direito<\/a>, Educa\u00e7\u00e3o F\u00edsica,\u00a0Filosofia<\/a>,\u00a0Geografia<\/a>, Letras<\/a>,\u00a0Qu\u00edmica<\/a>,\u00a0Matem\u00e1tica<\/a>,\u00a0Medicina<\/a>,\u00a0Enfermagem<\/a>,\u00a0F\u00edsica<\/a>,\u00a0Hist\u00f3ria<\/a>,\u00a0Seguran\u00e7a P\u00fablica<\/a>,\u00a0Pedagogia<\/a>,\u00a0Servi\u00e7o Social<\/a>\u00a0e\u00a0Sociologia<\/a>.<\/span><\/span><\/span><\/p>\n

N\u00facleo de\u00a0Normandia<\/a><\/span><\/span><\/span><\/p>\n

Cursos de\u00a0Administra\u00e7\u00e3o<\/a>,\u00a0Agronomia<\/a>\u00a0e\u00a0Pedagogia<\/a>.<\/span><\/span><\/span><\/p>\n

N\u00facleo de\u00a0Bonfim<\/a><\/span><\/span><\/span><\/p>\n

Cursos de\u00a0Letras<\/a>\u00a0e\u00a0Pedagogia<\/a><\/span><\/span><\/span><\/p>\n

N\u00facleo de\u00a0Mucaja\u00ed<\/a><\/span><\/span><\/span><\/p>\n

Cursos de\u00a0Ci\u00eancias Biol\u00f3gicas<\/a>,\u00a0Letras<\/a>,\u00a0Educa\u00e7\u00e3o F\u00edsica<\/a>,\u00a0Servi\u00e7o Social<\/a>\u00a0e\u00a0Pedagogia<\/a>.<\/span><\/span><\/span><\/p>\n

N\u00facleo\u00a0Alto Alegre<\/a><\/span><\/span><\/span><\/p>\n

Cursos de\u00a0Ci\u00eancias Cont\u00e1beis<\/a>,\u00a0Agronomia<\/a>,\u00a0Enfermagem<\/a>\u00a0e\u00a0Pedagogia<\/a>.<\/span><\/span><\/span><\/p>\n

N\u00facleo\u00a0Caracara\u00ed<\/a><\/span><\/span><\/span><\/p>\n

Cursos de\u00a0Ci\u00eancia da Computa\u00e7\u00e3o<\/a>,\u00a0Matem\u00e1tica<\/a>,\u00a0Pedagogia<\/a>.<\/span><\/span><\/span><\/p>\n

N\u00facleo\u00a0Pacaraima<\/a><\/span><\/span><\/span><\/p>\n

Cursos de\u00a0Com\u00e9rcio Exterior<\/a>,\u00a0Letras<\/a>,\u00a0Turismo<\/a>\u00a0e\u00a0Ci\u00eancia da Computa\u00e7\u00e3o<\/a>.<\/span><\/span><\/span><\/p>\n

Sala descentralizada de Surum\u00fa<\/span><\/span><\/span><\/p>\n

Curso de\u00a0Pedagogia<\/a>.<\/span><\/span><\/span><\/p>\n

N\u00facleo\u00a0Rorain\u00f3polis<\/a><\/span><\/span><\/span><\/p>\n

Cursos de\u00a0Ci\u00eancias Cont\u00e1beis<\/a>,\u00a0Filosofia<\/a>,\u00a0Letras<\/a>,\u00a0Qu\u00edmica<\/a>,\u00a0Engenharia Florestal<\/a>,\u00a0Ci\u00eancias Biol\u00f3gicas<\/a>,\u00a0Agronomia<\/a>,\u00a0Matem\u00e1tica<\/a>,\u00a0Pedagogia<\/a>\u00a0e\u00a0F\u00edsica<\/a>.<\/span><\/span><\/span><\/p>\n

N\u00facleo de Nova Colina<\/span><\/span><\/span><\/p>\n

Curso de\u00a0Administra\u00e7\u00e3o<\/a>,\u00a0Letras<\/a>.<\/span><\/span><\/span><\/p>\n

N\u00facleo\u00a0S\u00e3o Jo\u00e3o da Baliza<\/a><\/span><\/span><\/span><\/p>\n

Cursos de\u00a0Administra\u00e7\u00e3o<\/a>,\u00a0Engenharia Florestal<\/a>,\u00a0Matem\u00e1tica<\/a>,\u00a0Sociologia<\/a>,\u00a0Pedagogia<\/a>,\u00a0Qu\u00edmica<\/a>\u00a0e\u00a0Letras<\/a>.<\/span><\/span><\/span><\/p>\n

N\u00facleo de Nova Colina<\/span><\/span><\/span><\/p>\n

Curso de\u00a0Pedagogia<\/a>.<\/span><\/span><\/span><\/p>\n

01- (UERR-RR-019)<\/span><\/span><\/span><\/p>\n

<\/p>\n

A <\/b><\/span><\/span><\/span>primeira lei da Termodin\u00e2mica <\/b><\/span><\/span><\/span>expressa o <\/b><\/span><\/span><\/span>princ\u00edpio de conserva\u00e7\u00e3o<\/b><\/span><\/span><\/span> da:<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

A) <\/b><\/span><\/span><\/span>energia nos fen\u00f4menos mec\u00e2nicos. <\/b><\/span><\/span><\/span><\/p>\n

B) <\/b><\/span><\/span><\/span>quantidade de movimento na rota\u00e7\u00e3o. <\/b><\/span><\/span><\/span><\/p>\n

C) <\/b><\/span><\/span><\/span>temperatura nos fen\u00f4menos t\u00e9rmicos. <\/b><\/span><\/span><\/span><\/p>\n

D) <\/b><\/span><\/span><\/span>energia nos fen\u00f4menos t\u00e9rmicos. <\/b><\/span><\/span><\/span><\/p>\n

E) <\/b><\/span><\/span><\/span>energia nos fen\u00f4menos ondulat\u00f3rios.<\/b><\/span><\/span><\/span><\/p>\n

02- (UERR-RR-019)<\/span><\/span><\/span><\/p>\n

<\/p>\n

A <\/b><\/span><\/span><\/span>acelera\u00e7\u00e3o de um corpo igual a 5 m\/s\u00b2 significa que esse corpo:<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

A) <\/b><\/span><\/span><\/span>se traslada 5 metros cada segundo. <\/b><\/span><\/span><\/span><\/p>\n

B) <\/b><\/span><\/span><\/span>varia sua velocidade em 5 m\/s cada segundo. <\/b><\/span><\/span><\/span><\/p>\n

C) <\/b><\/span><\/span><\/span>sempre sua posi\u00e7\u00e3o \u00e9 5 metros. <\/b><\/span><\/span><\/span><\/p>\n

D) <\/b><\/span><\/span><\/span>aumenta 5 vezes sua velocidade em cada segundo. <\/b><\/span><\/span><\/span><\/p>\n

E) <\/b><\/span><\/span><\/span>aumenta sua posi\u00e7\u00e3o 5 vezes em cada segundo.<\/b><\/span><\/span><\/span><\/p>\n

03- (UERR-RR-019)<\/span><\/span><\/span><\/p>\n

<\/p>\n

Num <\/b><\/span><\/span><\/span>circuito formado por uma fonte de corrente direta de 25 V e dois resistores de resist\u00eancia 100 \u038f, cada um, conectados em paralelo entre si. <\/b><\/span><\/span><\/span><\/p>\n

A <\/b><\/span><\/span><\/span>pot\u00eancia da fonte \u00e9 igual <\/b><\/span><\/span><\/span>a: <\/b><\/span><\/span><\/span><\/p>\n

A) <\/b><\/span><\/span><\/span>12,5 W <\/b><\/span><\/span><\/span>B) <\/b><\/span><\/span><\/span>0,10 W <\/b><\/span><\/span><\/span>C) <\/b><\/span><\/span><\/span>25 W <\/b><\/span><\/span><\/span>D) <\/b><\/span><\/span><\/span>0,25 W <\/b><\/span><\/span><\/span>E) <\/b><\/span><\/span><\/span>1,25 W<\/b><\/span><\/span><\/span><\/p>\n

04- (UERR-RR-019)<\/span><\/span><\/span><\/p>\n

<\/p>\n

Se uma <\/b><\/span><\/span><\/span>for\u00e7a de 50N <\/b><\/span><\/span><\/span>\u00e9 aplicada <\/b><\/span><\/span><\/span>sobre uma part\u00edcula na dire\u00e7\u00e3o horizontal e sentido para a direita <\/b><\/span><\/span><\/span>\u00e9<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

poss\u00edvel manter a part\u00edcula em equil\u00edbrio mec\u00e2nico se \u00e9 aplicada outra for\u00e7a <\/b><\/span><\/span><\/span>de: <\/b><\/span><\/span><\/span><\/p>\n

A) <\/b><\/span><\/span><\/span>50N na mesma dire\u00e7\u00e3o e sentido que a anterior. <\/b><\/span><\/span><\/span><\/p>\n

B) <\/b><\/span><\/span><\/span>100N na mesma dire\u00e7\u00e3o e sentido que a anterior. <\/b><\/span><\/span><\/span><\/p>\n

C) <\/b><\/span><\/span><\/span>50N na mesma dire\u00e7\u00e3o e sentido contr\u00e1rio a anterior. <\/b><\/span><\/span><\/span><\/p>\n

D) <\/b><\/span><\/span><\/span>100N no mesmo sentido e dire\u00e7\u00e3o vertical a anterior. <\/b><\/span><\/span><\/span><\/p>\n

E) <\/b><\/span><\/span><\/span>50N no mesmo sentido e dire\u00e7\u00e3o diagonal a anterior<\/b><\/span><\/span><\/span><\/p>\n

05- (UERR-RR-019)<\/span><\/span><\/span><\/p>\n

<\/p>\n

Estudando um <\/b><\/span><\/span><\/span>movimento de um corpo, numa trajet\u00f3ria reta, iniciando desde a posi\u00e7\u00e3o igual a zero, se determina a posi\u00e7\u00e3o em intervalos de 10segundos, <\/b><\/span><\/span><\/span>de maneira <\/b><\/span><\/span><\/span>que \u00e9 constru\u00edda a tabela seguinte:<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

Considerando <\/b><\/span><\/span><\/span>esses dados, se pode afirmar que o movimento do corpo apresenta caracter\u00edstica de movimento: <\/b><\/span><\/span><\/span><\/p>\n

A) <\/b><\/span><\/span><\/span>retil\u00edneo acelerado. <\/b><\/span><\/span><\/span><\/p>\n

B) <\/b><\/span><\/span><\/span>retil\u00edneo uniformemente variado. <\/b><\/span><\/span><\/span><\/p>\n

C) <\/b><\/span><\/span><\/span>circular uniforme. <\/b><\/span><\/span><\/span><\/p>\n

D) <\/b><\/span><\/span><\/span>retil\u00edneo uniforme. <\/b><\/span><\/span><\/span><\/p>\n

E) <\/b><\/span><\/span><\/span>circular uniformemente acelerado<\/b><\/span><\/span><\/span><\/p>\n

06- (UERR-RR-019)<\/span><\/span><\/span><\/p>\n

<\/p>\n

Um <\/b><\/span><\/span><\/span>raio de luz incide, desde o ar, na superf\u00edcie de um l\u00edquido, penetrando neste e se desvia de sua<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

dire\u00e7\u00e3o. <\/b><\/span><\/span><\/span>Este <\/b><\/span><\/span><\/span>fen\u00f4meno descrito corresponde a um fen\u00f4meno luminoso <\/b><\/span><\/span><\/span>de: <\/b><\/span><\/span><\/span><\/p>\n

A) <\/b><\/span><\/span><\/span>refra\u00e7\u00e3o. <\/b><\/span><\/span><\/span>B) <\/b><\/span><\/span><\/span>reflex\u00e3o. <\/b><\/span><\/span><\/span> C) <\/b><\/span><\/span><\/span>polariza\u00e7\u00e3o. <\/b><\/span><\/span><\/span>D) <\/b><\/span><\/span><\/span>interfer\u00eancia. <\/b><\/span><\/span><\/span>E) <\/b><\/span><\/span><\/span>difra\u00e7\u00e3o.<\/b><\/span><\/span><\/span><\/p>\n

07- (UERR-RR-019)<\/span><\/span><\/span><\/p>\n

<\/p>\n

Num <\/b><\/span><\/span><\/span>sistema formado por uma bobina de fio de cobre conectada a um amper\u00edmetro<\/b><\/span><\/span><\/span> e <\/b><\/span><\/span><\/span>um \u00edm\u00e3,<\/b><\/span><\/span><\/span> se <\/b><\/span><\/span><\/span>neste se detecta corrente el\u00e9trica significa <\/b><\/span><\/span><\/span>que: <\/b><\/span><\/span><\/span><\/p>\n

A) <\/b><\/span><\/span><\/span>o \u00edm\u00e3 est\u00e1 colocado no interior da bobina completamente. <\/b><\/span><\/span><\/span><\/p>\n

B) <\/b><\/span><\/span><\/span>o \u00edm\u00e3 est\u00e1 totalmente afastado da bobina. <\/b><\/span><\/span><\/span><\/p>\n

C) <\/b><\/span><\/span><\/span>a bobina foi constru\u00edda com uma quantidade muito grande de espiras. <\/b><\/span><\/span><\/span><\/p>\n

D) <\/b><\/span><\/span><\/span>o \u00edm\u00e3 est\u00e1 colocado fora da bobina, mas paralelo a esta. <\/b><\/span><\/span><\/span><\/p>\n

E) <\/b><\/span><\/span><\/span>o \u00edm\u00e3 est\u00e1 movendo-se continuamente em rela\u00e7\u00e3o \u00e0 bobina.<\/b><\/span><\/span><\/span><\/p>\n

08- (UERR-RR-019)<\/span><\/span><\/span><\/p>\n

<\/p>\n

A <\/b><\/span><\/span><\/span>frequ\u00eancia de uma onda (f) est\u00e1 relacionada com sua velocidade (V) e o comprimento de onda (\u03bb)<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

atrav\u00e9s da express\u00e3o: f = V\/\u03bb . <\/b><\/span><\/span><\/span>Com <\/b><\/span><\/span><\/span>esta informa\u00e7\u00e3o devemos inferir que a velocidade da onda: <\/b><\/span><\/span><\/span><\/p>\n

A) <\/b><\/span><\/span><\/span>depende s\u00f3 da frequ\u00eancia da mesma. <\/b><\/span><\/span><\/span><\/p>\n

B) <\/b><\/span><\/span><\/span>n\u00e3o depende da frequ\u00eancia nem do comprimento de onda. <\/b><\/span><\/span><\/span><\/p>\n

C) <\/b><\/span><\/span><\/span>depende da frequ\u00eancia e do comprimento de onda. <\/b><\/span><\/span><\/span><\/p>\n

D) <\/b><\/span><\/span><\/span>depende s\u00f3 do comprimento de onda. <\/b><\/span><\/span><\/span><\/p>\n

E) <\/b><\/span><\/span><\/span>\u00e9 constante em qualquer meio. <\/b><\/span><\/span><\/span><\/p>\n

09- (UERR-RR-019)<\/span><\/span><\/span><\/p>\n

<\/p>\n

Num <\/b><\/span><\/span><\/span>processo isot\u00e9rmico, tr\u00eas mol de um g\u00e1s ideal a uma press\u00e3o de 40N\/m\u00b2 e volume de 0,5m\u00b3 se expande alcan\u00e7ando um volume final de 2m\u00b3.<\/b><\/span><\/span><\/span> <\/b><\/p>\n

A press\u00e3o do g\u00e1s ao final do processo <\/b><\/span><\/span><\/span>\u00e9: <\/b><\/span><\/span><\/span><\/p>\n

A) <\/b><\/span><\/span><\/span>40N\/m\u00b2 <\/b><\/span><\/span><\/span>B) <\/b><\/span><\/span><\/span>20N\/m\u00b2 <\/b><\/span><\/span><\/span>C) <\/b><\/span><\/span><\/span>0,5N\/m\u00b2 <\/b><\/span><\/span><\/span>D) <\/b><\/span><\/span><\/span>2,0N\/m\u00b2 <\/b><\/span><\/span><\/span>E) <\/b><\/span><\/span><\/span>10N\/m\u00b2<\/b><\/span><\/span><\/span><\/p>\n

Resolu\u00e7\u00e3o Comentada \u2013 UERR – RR \u2013 2019<\/b><\/span><\/span><\/span><\/p>\n

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

Primeiro Princ\u00edpio da Termodin\u00e2mica ou Princ\u00edpio da Conserva\u00e7\u00e3o da energia<\/b><\/span><\/span><\/span><\/span><\/p>\n

O\u00a0<\/b><\/span><\/span>Primeiro Princ\u00edpio da Termodin\u00e2mica (Princ\u00edpio da Conserva\u00e7\u00e3o da Energia) afirma que:\u00a0\u201cA energia n\u00e3o pode ser criada nem destru\u00edda, mas apenas transformada\u201d<\/b><\/span><\/span><\/span><\/span><\/p>\n

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

02-<\/span><\/span><\/span><\/p>\n

Define-se\u00a0<\/b><\/span><\/span>acelera\u00e7\u00e3o escalar m\u00e9dia (a<\/b><\/span><\/span>m<\/b><\/span><\/sub><\/span>)<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>ao\u00a0quociente\u00a0<\/b><\/span><\/span>entre a varia\u00e7\u00e3o de velocidade (\u0394V) pelo respectivo intervalo de tempo (\u0394t),\u00a0<\/b><\/span><\/span>ou seja:<\/b><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

Significado de acelera\u00e7\u00e3o (escalar) m\u00e9dia<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>A<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>acelera\u00e7\u00e3o escalar m\u00e9dia<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>de um m\u00f3vel significa\u00a0<\/b><\/span><\/span>de quanto sua velocidade varia na unidade de<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>tempo.<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>Assim, se um m\u00f3vel tem\u00a0<\/b><\/span><\/span>acelera\u00e7\u00e3o escalar m\u00e9dia de 5m\/s<\/b><\/span><\/span>2<\/b><\/span><\/sup><\/span>\u00a0<\/b><\/span><\/span>significa que sua velocidade\u00a0\u00a0varia de 2m\/s em cada 1s;<\/b><\/span><\/span>\u00a0de <\/b><\/span><\/span>8 km\/h<\/b><\/span><\/span>2<\/b><\/span><\/sup><\/span>\u00a0significa<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>que sua velocidade\u00a0varia de 8km\/h em cada 1h, e assim por diante.<\/b><\/span><\/span><\/span><\/span><\/p>\n

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

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

<\/p>\n

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

04-<\/span><\/span><\/span><\/p>\n

Para <\/b><\/span><\/span><\/span>manter a part\u00edcula (sistema) em equil\u00edbrio mec\u00e2nico<\/b><\/span><\/span><\/span> \u00e9 necess\u00e1rio que a <\/b><\/span><\/span><\/span>resultante das que<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

agem sobre ele seja nula e isso s\u00f3 acontece se essas for\u00e7as se anularem tendo mesmo m\u00f3dulo (50 N), mesma dire\u00e7\u00e3o (horizontal) mas sentidos opostos.<\/b><\/span><\/span><\/span><\/p>\n

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

05-<\/span><\/span><\/span><\/p>\n

Como a <\/b><\/span><\/span><\/span>trajet\u00f3ria \u00e9 reta o movimento \u00e9 retil\u00edneo<\/b><\/span><\/span><\/span> e <\/b><\/span><\/span><\/span>como percorre espa\u00e7os iguais em tempos iguais a velocidade V \u00e9 constante,<\/b><\/span><\/span><\/span> ent\u00e3o se <\/b><\/span><\/span><\/span>trata de um movimento retil\u00edneo uniforme. <\/b><\/span><\/span><\/span><\/p>\n

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

06-<\/span><\/span><\/span><\/p>\n

A\u00a0<\/b><\/span><\/span><\/span>refra\u00e7\u00e3o da luz\u00a0<\/b><\/span><\/span><\/span>\u00e9 um\u00a0<\/b><\/span><\/span><\/span>fen\u00f4meno<\/b><\/span><\/span><\/span>\u00a0que ocorre quando a\u00a0<\/b><\/span><\/span><\/span>luz passa de um meio para outro, variando sua velocidade de propaga\u00e7\u00e3o e sofrendo desvio.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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

07-<\/span><\/span><\/span><\/p>\n

Corrente el\u00e9trica induzida<\/b><\/span><\/span><\/span><\/p>\n

Para que voc\u00ea entenda o\u00a0<\/b><\/span><\/span><\/span>fen\u00f4meno da indu\u00e7\u00e3o eletromagn\u00e9tica<\/b><\/span><\/span><\/span>, considere uma\u00a0<\/b><\/span><\/span><\/span>\u00fanica espira\u00a0<\/b><\/span><\/span><\/span>e<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

um\u00a0<\/b><\/span><\/span><\/span>im\u00e3 permanente.\u00a0<\/b><\/span><\/span><\/span>Quando voc\u00ea\u00a0<\/b><\/span><\/span><\/span>aproxima o im\u00e3 da espira,<\/b><\/span><\/span><\/span>\u00a0o\u00a0<\/b><\/span><\/span><\/span>n\u00famero de linhas de indu\u00e7\u00e3o do im\u00e3 que penetram na espira (fluxo magn\u00e9tico) aumenta<\/b><\/span><\/span><\/span>, fazendo\u00a0<\/b><\/span><\/span><\/span>surgir na espira uma corrente el\u00e9trica induzida num determinado sentido.<\/b><\/span><\/span><\/span><\/p>\n

Quando voc\u00ea\u00a0<\/b><\/span><\/span><\/span>afasta o im\u00e3 da espira,\u00a0<\/b><\/span><\/span><\/span>o\u00a0<\/b><\/span><\/span><\/span>n\u00famero de linhas de indu\u00e7\u00e3o do im\u00e3 (fluxo magn\u00e9tico)\u00a0<\/b><\/span><\/span><\/span>que\u00a0<\/b><\/span><\/span><\/span>penetram na espira diminui,\u00a0<\/b><\/span><\/span><\/span>fazendo\u00a0<\/b><\/span><\/span><\/span>surgir na espira uma corrente el\u00e9trica induzida com sentido oposto ao anterior.<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

\u00a0Com o\u00a0<\/b><\/span><\/span><\/span>im\u00e3 im\u00f3vel,\u00a0<\/b><\/span><\/span><\/span>o\u00a0<\/b><\/span><\/span><\/span>n\u00famero de linhas de indu\u00e7\u00e3o que penetram na espira (fluxo magn\u00e9tico) n\u00e3o muda, n\u00e3o existindo corrente el\u00e9trica induzida.<\/b><\/span><\/span><\/span><\/p>\n

Voc\u00ea obteria o\u00a0<\/b><\/span><\/span><\/span>mesmo resultado acima, mantendo o im\u00e3 fixo e movendo a espira\u00a0<\/b><\/span><\/span><\/span>ou\u00a0<\/b><\/span><\/span><\/span>movendo os dois,\u00a0<\/b><\/span><\/span><\/span>pois\u00a0<\/b><\/span><\/span><\/span>n\u00e3o importa quem se movimente,<\/b><\/span><\/span><\/span>\u00a0mas que\u00a0<\/b><\/span><\/span><\/span>haja varia\u00e7\u00e3o de fluxo magn\u00e9tico atrav\u00e9s da espira<\/b><\/span><\/span><\/span>, o que\u00a0<\/b><\/span><\/span><\/span>s\u00f3 ocorre se a velocidade relativa entre eles for diferente de zero.<\/b><\/span><\/span><\/span><\/p>\n

O\u00a0<\/b><\/span><\/span><\/span>mesmo ser\u00e1 v\u00e1lido\u00a0<\/b><\/span><\/span><\/span>se,\u00a0<\/b><\/span><\/span><\/span>em vez\u00a0<\/b><\/span><\/span><\/span>de\u00a0<\/b><\/span><\/span><\/span>uma espira voc\u00ea tivesse um solenoide ou bobina <\/b><\/span><\/span><\/span>(v\u00e1rias espiras circulares de mesmo raio,\u00a0<\/b><\/span><\/span><\/span>conc\u00eantricas e interligadas<\/b><\/span><\/span><\/span>)<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

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

08-<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

Observe na <\/b><\/span><\/span><\/span>express\u00e3o acima <\/b><\/span><\/span><\/span>que, sendo a <\/b><\/span><\/span><\/span>velocidade da luz (c) constante, <\/b><\/span><\/span><\/span>a <\/b><\/span><\/span><\/span>velocidade de propaga\u00e7\u00e3o (V) da onda depende apenas do \u00edndice de refra\u00e7\u00e3o (n) do meio onde a onda est\u00e1 se propagando,<\/b><\/span><\/span><\/span> ou seja, <\/b><\/span><\/span><\/span>depende apenas das caracter\u00edsticas do meio de propaga\u00e7\u00e3o, n\u00e3o dependendo <\/b><\/span><\/span><\/span>da frequ\u00eancia (f) nem do comprimento de onda <\/b><\/span><\/span><\/span>\ud835\udf06<\/b><\/span><\/span><\/span>. <\/b><\/span><\/span><\/span><\/p>\n

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

09-<\/span><\/span><\/span><\/p>\n

Numa <\/b><\/span><\/span><\/span>isot\u00e9rmica a temperatura T \u00e9 constante <\/b><\/span><\/span><\/span>(T = T<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sub><\/span>) \u25ba<\/b><\/span><\/span><\/span> \u25ba P<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sub><\/span>.V<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sub><\/span> = P.V \u25ba 40.0,5 = P.2<\/b><\/span><\/span><\/span><\/p>\n

\u25ba <\/span>P = 10 N\/m<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sup><\/span> (Pa)<\/b><\/span><\/span><\/span><\/p>\n

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

 <\/p>\n

Clique aqui para ver sobre o tema!<\/a><\/p>\n

Confira as v\u00eddeo aulas!<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Universidade Estadual de Roraima\u00a0(UERR) \u00e9 uma\u00a0institui\u00e7\u00e3o de ensino superior\u00a0p\u00fablica\u00a0estadual localizada na cidade de\u00a0Boa Vista, capital de\u00a0Roraima. Foi criada pela Lei Complementar N\u00ba 91, de 10 de novembro de 2005. Mantida pelo\u00a0Governo\u00a0estadual, a UERR realiza os\u00a0vestibulares\u00a0anuais no m\u00eas de Dezembro para provimento de vagas. Possui diversas unidades por todo o estado, sendo essa\u00a0pol\u00edtica\u00a0de\u00a0interioriza\u00e7\u00e3o\u00a0do ensino superior uma de suas propostas fundamentais que<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":4337,"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-4439","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4439","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=4439"}],"version-history":[{"count":3,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4439\/revisions"}],"predecessor-version":[{"id":10309,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4439\/revisions\/10309"}],"up":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4337"}],"wp:attachment":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/media?parent=4439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}