Questões - ITA | Gabarito e resoluções

(ITA - 2004) Duas partculas carregadas com cargas opostas esto posicionadas em uma corda nas posies e, respectivamente. Uma onda transversal e progressiva de equao , presente na corda, capaz de transferir energia para as partculas, no sendo, porm, afetada por elas. Considerando T o perodo da onda, Efa energia potencial eltrica das partculas no instante , e Ei essa mesma energia no instante t = 0, qual a razo ?

(ITA - 2004 - 1a Fase) Considere os metais P, Q , R e S e quatro solues aquosas contendo, cada uma, um dos ons Pp+, Qq+, Rr+, Ss+ (sendo p, q, r, s nmeros inteiros e positivos). Em condies-padro, cada um dos metais foi colocado em contato com uma das solues aquosas e algumas das observaes realizadas podem ser representadas pelas seguintes equaes qumicas: I. qP + pQq+ no ocorre reao. II. rP + pRr+ no ocorre reao. III. rS + sRr+ sR + rSs+. IV. sQ + qSs+ qS + sQq+. Baseado nas informaes acima, a ordem crescente do poder oxidante dos ons Pp+, Qq+, Rr+ e Ss+ deve ser disposta da seguinte forma:

(ITA - 2004 - 1a Fase) Seja x IR e a matriz . Assinale a opo correta.

(ITA - 2004 - 1a Fase) And Now, the Birdcast 1Passing almost unnoticed in the night, billions of birds will fly over the mid-Atlantic states this spring on their 4annual migration northward. A new5Web site will help ornithologists pinpoint 6critical habitat for the feathered 7travelers by combining weather radar 8data with old-fashioned fieldwork. 9Radar has been used to track bird10migrations since around 1940, says 11Steve Kelling, who heads BirdSource, a 12bird database at Cornell University. But the potential payoff grew about 5 years ago when the government began15installing Doppler radar Stations, which 16yield high-resolution three-dimensional 17data. Ornithologists are eager to use 18Doppler to track bird movement, but 19first, they need to calibrate it with data20from the ground. So Cornell, Clemson University, and other groups have launched BirdCast. Every few hours from 1 April to 31 May, radar images of the Philadelphia to25Washington, D. C., area some filtered to remove weather and reveal birds will be posted on the projects Web site (www.birdcast.org). The site will also collect observations30from several hundred citizen-scientists 31(birdwatchers, that is), which will be 32combined with other data, such as chirps 33picked up by acoustic monitors. Kelling 34says the results should reveal the birds35favorite rest stops, highlighting priority 36areas for protection. Eventually, 38BirdCast hopes to go nationwide. SCIENCE Vol 288 7 April 2000 ndices no canto superior esquerdo de uma palavra indica o nmero da linha do texto original. A idia principal abordada pela notcia

(ITA - 2004 - 1a Fase) Considerando as funese, assinale o valor de .

(ITA - 2004 - 1a Fase) And Now, the Birdcast 1Passing almost unnoticed in the night, billions of birds will fly over the mid-Atlantic states this spring on their 4annual migration northward. A new5Web site will help ornithologists pinpoint 6critical habitat for the feathered 7travelers by combining weather radar 8data with old-fashioned fieldwork. 9Radar has been used to track bird10migrations since around 1940, says 11Steve Kelling, who heads BirdSource, a 12bird database at Cornell University. But the potential payoff grew about 5 years ago when the government began15installing Doppler radar Stations, which 16yield high-resolution three-dimensional 17data. Ornithologists are eager to use 18Doppler to track bird movement, but 19first, they need to calibrate it with data20from the ground. So Cornell, Clemson University, and other groups have launched BirdCast. Every few hours from 1 April to 31 May, radar images of the Philadelphia to25Washington, D. C., area some filtered to remove weather and reveal birds will be posted on the projects Web site (www.birdcast.org). The site will also collect observations30from several hundred citizen-scientists 31(birdwatchers, that is), which will be 32combined with other data, such as chirps 33picked up by acoustic monitors. Kelling 34says the results should reveal the birds35favorite rest stops, highlighting priority 36areas for protection. Eventually, 38BirdCast hopes to go nationwide. SCIENCE Vol 288 7 April 2000 ndices no canto superior esquerdo de uma palavra indica o nmero da linha do texto original. Considere as seguintes asseres: I. A inteno dos idealizadores do BirdCast que ele se torne um projeto de abrangncia nacional. II. Radares so utilizados em estudos de movimentos migratrios dos pssaros h mais de 60 anos. III. A implantao de estaes de radar Doppler permite a coleta de dados de alta resoluo em trs dimenses. Ento, das afirmaes acima, est(o) correta(s):

(ITA - 2004 - 1a Fase) A figura plana a seguir mostra os elementos de um circuito eltrico. Nesse mesmo plano encontram-se duas espiras interligadas, A e B, de comprimentos relativamente curtos em comparao aos dois fios condutores prximos (CD e EF). A deflexo do ponteiro do micro-ampermetro, intercalado na espira B, s ocorre instantaneamente no momento em que

(ITA - 2004 - 1a Fase) A estrutura molecular da morfina est representada adiante. Assinale a opo que apresenta dois dos grupos funcionais presentes nesta substncia.

(ITA - 2004 - 1a Fase)O circuito eltrico mostrado na figura constitudo por dois geradores ideais, com 45 V de fora eletromotriz, cada um; dois capacitores de capacitncias iguais a 2 F; duas chaves S e T e sete resistores, cujas resistncias esto indicadas na figura. Considere que as chaves S e T se encontram inicialmente fechadas e que o circuito est no regime estacionrio. Assinale a opocorreta.

(ITA - 2004) Considere um polgono convexo de nove lados, em que as medidas de seus ngulos internos constituem uma progresso aritmtica de razo igual a 5. Ento, seu maior ngulo mede, em graus,

(ITA - 2004 - 1a Fase) And Now, the Birdcast 1Passing almost unnoticed in the night, billions of birds will fly over the mid-Atlantic states this spring on their 4annual migration northward. A new5Web site will help ornithologists pinpoint 6critical habitat for the feathered 7travelers by combining weather radar 8data with old-fashioned fieldwork. 9Radar has been used to track bird10migrations since around 1940, says 11Steve Kelling, who heads BirdSource, a 12bird database at Cornell University. But the potential payoff grew about 5 years ago when the government began15installing Doppler radar Stations, which 16yield high-resolution three-dimensional 17data. Ornithologists are eager to use 18Doppler to track bird movement, but 19first, they need to calibrate it with data20from the ground. So Cornell, Clemson University, and other groups have launched BirdCast. Every few hours from 1 April to 31 May, radar images of the Philadelphia to25Washington, D. C., area some filtered to remove weather and reveal birds will be posted on the projects Web site (www.birdcast.org). The site will also collect observations30from several hundred citizen-scientists 31(birdwatchers, that is), which will be 32combined with other data, such as chirps 33picked up by acoustic monitors. Kelling 34says the results should reveal the birds35favorite rest stops, highlighting priority 36areas for protection. Eventually, 38BirdCast hopes to go nationwide. SCIENCE Vol 288 7 April 2000 ndices no canto superior esquerdo de uma palavra indica o nmero da linha do texto original. Os termos feathered travelers (linhas 6 e 7), it (linha 19) e which (linha 31) referem-se, respectivamente, a

(ITA - 2004 - 1a Fase) Qual das opes abaixo apresenta a comparao ERRADA relativa aos raios de tomos e de ons?

(ITA - 2004 - 1a Fase) And Now, the Birdcast 1Passing almost unnoticed in the night, billions of birds will fly over the mid-Atlantic states this spring on their 4annual migration northward. A new5Web site will help ornithologists pinpoint 6critical habitat for the feathered 7travelers by combining weather radar 8data with old-fashioned fieldwork. 9Radar has been used to track bird10migrations since around 1940, says 11Steve Kelling, who heads BirdSource, a 12bird database at Cornell University. But the potential payoff grew about 5 years ago when the government began15installing Doppler radar Stations, which 16yield high-resolution three-dimensional 17data. Ornithologists are eager to use 18Doppler to track bird movement, but 19first, they need to calibrate it with data20from the ground. So Cornell, Clemson University, and other groups have launched BirdCast. Every few hours from 1 April to 31 May, radar images of the Philadelphia to25Washington, D. C., area some filtered to remove weather and reveal birds will be posted on the projects Web site (www.birdcast.org). The site will also collect observations30from several hundred citizen-scientists 31(birdwatchers, that is), which will be 32combined with other data, such as chirps 33picked up by acoustic monitors. Kelling 34says the results should reveal the birds35favorite rest stops, highlighting priority 36areas for protection. Eventually, 38BirdCast hopes to go nationwide. SCIENCE Vol 288 7 April 2000 ndices no canto superior esquerdo de uma palavra indica o nmero da linha do texto original. Os termos weather, em weather radar data (linhas 7 e 8); heads, em who heads BirdSource (linha 11); e rest, em birds favorite rest stops (linhas 34 e 35) tm, respectivamente, as funes gramaticais de

(ITA - 2004 - 1a Fase) O termo independente de x no desenvolvimento do binmio

(ITA - 2004 - 1a Fase) Considere as seguintes configuraes eletrnicas e respectivas energias da espcie atmica (A) , na fase gasosa, na formaneutra, aninica ou catinica, no estado fundamental ou excitado: I. ns2np5(n + 1)s2; EI. II. ns2np6(n + 1)s1(n+ 1)p1; EII. III. ns2np4(n + 1)s2; EIII. IV. ns2np5; EIV. V. ns2np6(n + 1)s2; EV. VI. ns2np6; EVI. VII. ns2np5(n + 1)s1(n + 1)p1; EVII. VIII. ns2np6(n + 1)s1; EVIII. Sabendo que a energia, em mdulo, do primeiro estado excitado do tomo neutro (A) , assinale a alternativa ERRADA.