Questões - ITA 2005 | Gabarito e resoluções

(ITA -2005 - 1 FASE ) Assinale a opo que contm a substncia cuja combusto, nas condies padro, libera maior quantidade de energia.

(ITA - 2005 - 1 FASE) Hywel Rhys Thomas, 56, is an authority on Education. Holder of a PhD in Education from the University of Birmingham, he has worked as a lecturer, administrator and researcher in Europe and as a consultant in Africa and South America. Last September he took part in Education and Science as Strategies for National Development, an international seminar held in Brasilia organised by UNESCO and the Brazilian Ministry of Education. Dr.Thomas, who participated as a guest of the British Council, discussed his ideas with Link UK: (I) Link: ....................................................................... H. R. Thomas: Over the last 15 years, the United Kingdom has been a place where major reforms have been introduced into almost all parts of the education system. It has become a natural laboratory, where different methods have been employed. We have gone from a system with very great professional autonomy to one where there is much more direction. My presentation explored the issue of balance between autonomy and control. Link: What is the greatest challenge for Education in a country like Brazil? H. R. Thomas: Clearly, sufficient resources are a major challenge. It is also important to move towards more active learning. The leading economies of the 21st century will be ones where people are lifelong learners and the only way in which you become a lifelong learner is to learn how to learn. This must mean moving away from passive acquisition of knowledge to a model where there is more emphasis on analytical and critical skills. (adapted from Link UK. March/April/May/June,2004) Assinale a opo que contm a melhor pergunta para a lacuna (I).

(ITA - 2005 - 1 FASE )Considere um prisma regular em que a soma dos ngulos internos de todas as faces 7 200. O nmero de vrtices deste prisma igual a

(ITA - 2005 - 1 FASE )As questes de 8 a 10 referem-se ao seguinte trecho, extrado de uma entrevista: Cada uma das opes a seguir refere-se a um termo ou expresso extrados da entrevista. Assinale a opo em que o termo no corresponde ao significado explicitado.

(ITA - 2005 - 1 FASE ) Situa-se um objeto a uma distncia p diante de uma lente convergente de distncia focal f, de modo a obter uma imagem real a uma distncia p da lente. Considerando a condio de mnima distncia entre imagem e objeto, ento correto afirmar que:

(ITA - 2005) Considere as reaes representadas pelas equaes qumicas a seguir: O ndice positivo refere-se ao sentido da reao da esquerda para a direita e, o negativo, ao da direita para a esquerda. Sendo En energia de ativao e ∆H a variao de entalpia, so feitas as seguintes afirmaes, todas relativas s condies-padro: I. ∆H+3 = ∆H+1 + ∆H+2 II. ∆H+1 = - ∆H-1 III. En+3 = En+1 + En+2 IV. En+3 = - En-3 Das afirmaes acima est(o) CORRETA(S)

(ITA - 2005 - 1 FASE )Em relao a um sistema de eixos cartesiano ortogonal no plano, trs vrtices de um tetraedro regular so dados por A = (0, 0), B = (2,2) e C = ( 1 -, 1 +). O volume do tetraedro

(ITA - 2005) Qual das opes a seguir apresenta a sequncia CORRETA de comparao do pH de solues aquosas dos sais FeC2, FeC3, MgC2, KCO2, todas com mesma concentrao e sob mesma temperatura e presso?

(ITA - 2005 - 1 FASE )As questes de 8 a 10 referem-se ao seguinte trecho, extrado de uma entrevista: Considere as seguintes asseres: I. Entre outras atividades, H. R. Thomas j trabalhou como pesquisador e consultor na rea da Educao. II. As reformas no sistema educacional britnico foram feitas h 15 anos. III. Durante o Seminrio realizado em Braslia, H. R. Thomas falou sobre a importncia do equilbrio entre autonomia e controle na Educao. IV. Na opinio de H. R. Thomas, essencial que a escola incentive os alunos a aprender a aprender. Ento, das afirmaes acima, esto corretas

(ITA - 2005 - 1 FASE )Uma banda de rock irradia uma certa potncia em um nvel de intensidade sonora igual a 70 decibis. Para elevar esse nvel a 120 decibis, a potncia irradiada dever ser elevada de

(ITA - 2005 - 1 FASE ) Um pescador deixa cair uma lanterna acesa em um lago a 10,0 m de profundidade. No fundo do lago, a lanterna emite um feixe luminoso formando um pequeno ngulo com a vertical (veja figura). Considere: tg sen , o ndice de refrao do ar n1 = 1,00e o ndice de refrao da gua n2 = 1,33. Ento, a profundidade aparente h vista pelo pescador igual a:

(ITA - 2005 - 1 FASE ) No desenvolvimento de (ax2 - 2bx + c + 1)5 obtm-se um polinmio p(x) cujos coeficientes somam 32. Se 0 e -1 so razes de p(x), ento a soma a + b + c igual a

(ITA - 2005 - 1 FASE ) Considere as afirmaes abaixo, todas relativas presso de 1 atm: I - A temperatura de fuso do cido benzoico puro 122 C, enquanto que a da gua pura 0C. II - A temperatura de ebulio de uma soluo aquosa 1,00 mol L-1 de sulfato de cobre maiordo que a de uma soluo aquosa 0,10 mol L-1 deste mesmo sal. III - A temperatura de ebulio de uma soluo aquosa saturada em cloreto de sdio maiordo que a da gua pura. IV - A temperatura de ebulio do etanol puro 78,4 C, enquanto que a de uma soluoalcolica 10% (m/m) em gua 78,2 C. Das diferenas apresentadas em cada uma das afirmaes acima, est(o) relacionada(s) compropriedades coligativas

(ITA - 2005 - 1 FASE )As questes de 11 a 17 referem-se aos seguintes pargrafos: 1 The smaller boys were known by the generic title of littluns. The decrease in size, from Ralph down, was gradual; and though there was a dubious region inhabited by Simon and Robert and Maurice, nevertheless no one had any 5 difficulty in recognizing biguns at one end and littluns at the other. The undoubted liltluns, those aged about six, led a quite distinct, and at the same time intense, life of their own. They ate most of the day, picking fruit where they could reach it and not particular about ripeness and quality. They were 0 used now to stomach-aches and a sort of chronic diarrhoea. They suffered untold terrors in the dark and huddled together for comfort. Apart from food and sleep, they found time for play, aimless and trivial, among the white sand by the bright water. They cried for their mothers much less often than 15 might have been expected; they were very brown, and filthily dirty. They obeyed the summons of the conch, partly because Ralph blew it, and he was big enough to be a link with the adult world of authority; and partly because they enjoyed the entertainment of the assemblies. But otherwise they seldom 20 bothered with the biguns and their passionately emotional and corporate life was their own. They had built castles in the sand at the bar of the little river. These castles were about one foot high and were decorated with shells, withered flowers, and interesting 25 stones. Round the castles was a complex of marks, tracks, walls, railway lines, that were of significance only if inspected with the eye at beach-level. The littluns played here, if not happily at least with absorbed attention; and often as many as three of them would play the same game together. 30 (Golding, W. Lord of the flies. 1954/1977:64-65) Assinale a opo em que as oraes desmembradas da sentena The undoubted littluns, those aged about six, led a quite distinct, and at the same time intense, life of their own. (linhas 3, 4 e 5), mantm o significado original.

(ITA - 2005 - 1 FASE) The smaller boys were known by the generic title of Iittluns. The decrease in size, from Ralph down, was gradual; and though there was a dubious region inhabited by Simon and Robert and Maurice, nevertheless no one had any difficulty in recognizing biguns at one end and littluns at the other. The undoubted littluns, those aged about six, led a quite distinct, and at the same time intense, life of their own. They ate most of the day, picking fruit where they could reach it and not particular about ripeness and quality. They were used now to stomach-aches and a sort of chronic diarrhoea. They suffered untold terrors in the dark and huddled together for comfort. Apart from food and sleep, they found time for play, aimless and trivial, among the white sand by the bright water. They cried for their mothers much less often than might have been expected; they were very brown, and filthily dirty. They obeyed the summons of the conch,partly because Ralph blew it, and he was big enough to be a link with the adult world of authority; and partly because they enjoyed the entertainment of the assemblies. But otherwise they seldom bothered with the biguns and their passionately emotional and corporate life was their own. They had built castles in the sand at the bar of the little river. These castles were about one foot high and were decorated with shells, withered flowers, and interesting stones. Round the castles was a complex of marks, tracks, walls, railway lines, that were of significance only if inspected with the eye at beach-level. The littluns played here, if not happily at least with absorbed attention; and often as many as three of them would play the same game together. (Golding, W. Lord of the flies.1954/1977: 64-65) Assinale a opo que contm os respectivos significados dos termos nevertheless em nevertheless no one had ... e otherwise em But otherwise....