Questões - ITA | Gabarito e resoluções

(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 Em ... and though there was a dubious region inhabited by Simon and Robert and Maurice,... (linha 2), uma outra forma de escrever o trecho and though there was...

(ITA - 2005 - 1 FASE ) O nmero complexo 2 + i raiz do polinmio f(x) = x4 + x3 + px2 + x + q, com p, q IR. Ento, a alternativa que mais se aproxima da soma das razes reais de f

(ITA - 2005 - 1 FASE ) Assinale a opo que contm a afirmao ERRADA relativa curva de resfriamento apresentada a seguir.

(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 O significado do termo untold em They suffered untold terrors in the dark... (linha 6)

(ITA - 2005 - 1 FASE ) O circuito da figura a seguir, conhecido como ponte deWheatstone, est sendo utilizado para determinar a temperatura doleo de um reservatrio, no qual est inserido um resistor de fio detungstnio RT. O resistor varivel R ajustado automaticamente demodo a manter a ponte sempre em equilbrio, passando de 4,00 para 2,00 . Sabendo que a resistncia varia linearmente com a temperaturae que o coeficiente linear de temperatura para o tungstnio vale = 4,00 103 C1, a variao da temperatura do leo deve ser de:

(ITA - 2005 - 1 FASE ) A 25C, uma mistura de metano e propano ocupa um volume (V), sob uma presso total de 0,080 atm. Quando realizada a combusto completa desta mistura e apenas dixido de carbono coletado, verifica-se que a presso desse gs de 0,12 atm, quando este ocupa o mesmo volume (V) e est sob a mesma temperatura da mistura original. Admitindo que os gases tm comportamento ideal, assinale a opo que contm o valor CORRETO da concentrao, em frao em mols, do gs metano na mistura original.

(ITA - 2005 - 1 FASE ) Quando uma barra metlica se desloca num campo magntico, sabe-se que seus eltrons se movem para uma das extremidades, provocando entre elas uma polarizao eltrica. Desse modo, criado um campo eltrico constante no interior do metal, gerando uma diferena de potencial entre as extremidades da barra. Considere uma barra metlica descarregada, de 2,0 m de comprimento, que se desloca com velocidade constante de mdulo v = 216 km/h num plano horizontal (veja figura), prximo superfcie da Terra. Sendo criada uma diferena de potencial (ddp) de 3,0x10-3V entre as extremidades da barra, o valor do componente vertical do campo de induo magntica terrestre nesse local de:

(ITA - 2005) Considere a equao em x onde a e b so nmeros reais positivos, tais que.A soma das solues da equao

(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 Assinale a opo que expressa uma ideia no contida no texto.

(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 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 O pronome they em They had built castles (linha 13), refere-se a

(ITA - 2005 - 1 FASE ) Uma bicicleta, com rodas de 60 cm de dimetro externo, tem seu velocmetro composto de um ma preso em raios, a 15 cm do eixo da roda, e de uma bobina quadrada de 25 mm2de rea, com 20 espiras de fio metlico, preso no garfo da bicicleta. O m capaz de produzir um campo de induo magntica de 0,2 T em toda a rea da bobina (veja a figura). Com a bicicleta a 36 km/h, a fora eletromotriz mxima gerada pela bobina de

(ITA -2005) Dois copos (A e B) contm soluo aquosa 1 mol L-1 em nitrato de prata e esto conectados entre si por uma ponte salina. Mergulha-se parcialmente um fio de prata na soluo contida no copo A, conectando-o a um fio de cobre mergulhado parcialmente na soluo contida no copo B. Aps certo perodo de tempo, os dois fios so desconectados. A seguir, o condutor metlico do copo A conectado a um dos terminais de um multmetro, e o condutor metlico do copo B, ao outro terminal. Admitindo que a corrente eltrica no circula pelo elemento galvnico e que a temperatura permanece constante, assinale a opo que contm o grfico que melhor representa a forma como a diferena de potencial entre os dois eletrodos (E = EA - EB) varia com o tempo

(ITA - 2005 - 1 FASE )O intervalo I que contm todas as solues da inequao

(ITA - 2005 - 1 FASE ) Um automvel para quase que instantaneamente ao bater frontalmente numa rvore. A proteo oferecida pelo air-bag, comparativamente ao carro que dele no dispe, advm do fato de que a transferncia para o carro de parte do momentum do motorista se d em condio de

(ITA - 2005) Assinale a opo que contm o polmero que melhor conduz corrente eltrica, quando dopado.