Questões de f - ITA | Gabarito e resoluções

(ITA - 2018 - 1 FASE) Um tubo fino de massa 1.225 ge raio r = 10,0 cmencontra-se inicialmente em repouso sobre um plano horizontal sem atrito. A partir do ponto mais alto, um corpo de massa 71,0 gcom velocidade inicial zero desliza sem atrito pelo interior do tubo no sentido anti-horrio, conforme a figura. Ento, quando na posio mais baixa, o corpo ter uma velocidade relativa ao tubo, em cm/s, igual a

(ITA - 2018 - 1 FASE) GOODBYE THINGS, HELLO MINIMALISM: 1CAN LIVING WITH LESS MAKE YOU HAPPIER? Fumio Sasaki owns a roll-up mattress, three shirts and four pairs of socks. After deciding to scorn possessions, he began feeling happier. He explains why. Let me tell you a bit about myself. Im 35 years old, male, single, never been married. I work as an editor at a publishing company. I recently moved from the Nakameguro neighbourhood in Tokyo, where I lived for a decade, to a neighbourhood called Fudomae in a different part of town. 2The rent is cheaper, but the move pretty much wiped out my savings. Some of you may think that Im a loser: an unmarried adult with not much money. The old me would have been way too embarrassed to admit all this. I was filled with useless pride. But I honestly dont care about things like that any more. The reason is very simple: Im perfectly happy just as I am. The reason? I got rid of most of my material possessions. Minimalism is a lifestyle in which 3you reduce your possessions to the least possible. Living with only the bare essentials has not only provided superficial benefits such as the pleasure of a tidy room or the simple ease of cleaning, 4it has also led to a more fundamental shift. Its given me a chance to think about what it really means to be happy. We think that 5the more we have, the happier we will be. 6We never know what tomorrow might bring, so we collect and save as much as we can. This means we need a lot of money, so we gradually start judging people by how much money they have. You convince yourself that you need to make a lot of money so you dont miss out on success. And for you to make money, you need everyone else to spend their money. And so it goes. So I said goodbye to a lot of things, many of which Id had for years. And yet now I live each day with a happier spirit. 7I feel more content now than I ever did in the past. I wasnt always a minimalist. I used to buy a lot of things, believing that all those possessions would increase my self-worth and lead to a happier life. I loved collecting a lot of useless stuff, and I couldnt throw anything away. I was a natural hoarder of knick-knacks that I thought made me an interesting person. At the same time, though, I was always comparing myself with other people who had more or better things, 8which often made me miserable. I couldnt focus on anything, and I was always wasting time. Alcohol was my escape, and I didnt treat women fairly. I didnt try to change; I thought this was all just part of who I was, and I deserved to be unhappy. My apartment wasnt horribly messy; if my girlfriend was coming over for the weekend, I could do enough tidying up to make it look presentable. On a usual day, however, there were books stacked everywhere because there wasnt enough room on my bookshelves. Most I had thumbed through once or twice, thinking that 9I would read them when I had the time. The closet was crammed with what used to be my favorite clothes, most of which Id only worn a few times. The room was filled with all the things Id taken up as hobbies and then gotten tired of. A guitar and amplifier, covered with dust. Conversational English workbooks Id planned to study once I had more free time. Even a fabulous antique camera, 10which of course I had never once put a roll of film in. 11It may sound as if Im exaggerating when I say I started to become a new person. Someone said to me: All you did is throw things away, which is true. 12But by having fewer things around, Ive started feeling happier each day. Im slowly beginning to understand what happiness is. If you are anything like I used to be miserable, constantly comparing yourself with others, or just believing your life sucks 13I think you should try saying goodbye to some of your things. [] Everyone wants to be happy. But trying to buy happiness only makes us happy for a little while. Fonte: adaptado de https://www.theguardian.com/books/2017/apr/12/goodbye-things-hello-minimalism-can-living-with-lessmake-you-happier. Acesso em: 21 mai. 2017. Marque a opo correta de acordo com o sentido com que os verbos modais sublinhados so empregados no texto. I. Can living with less make you happier? (ref. 1) -para indicar uma possibilidade. II. We never know what tomorrow might bring, (ref. 6) -para indicar um estado contrrio realidade. III. It may sound as if Im exaggerating (ref. 11) -para indicar uma probabilidade. IV. I think you should try saying goodbye to some of your things. (ref. 13) -para dar um conselho. Esto corretas

(ITA - 2018 - 1 FASE) Uma massa m de carga q gira em rbita circular de raio R e perodo T no plano equatorial de um m. Nesse plano, a uma distncia r do m, a intensidade do campo magntico em que uma constante. Se fosse de 4R o raio dessa rbita, o perodo seria de

(ITA - 2018 - 1 FASE) Na figura, o tanque em forma de tronco de cone, com 10,0 cmde raio da base, contm gua at o nvel de altura h = 500 cmcom 100 cm de raio da superfcie livre. Removendo-se a tampa da base, a gua comea a escoar e, nesse instante, a presso no nvel a 15,0 cmde altura de

(ITA - 2018 - 1 Fase) Deseja-se aquecer 586 gde gua pura da temperatura ambiente at 91 Cem presso ambiente. Utilizando um forno de micro-ondas convencional que emite radiao eletromagntica com frequncia de 2,45 GHze considerando a capacidade calorfica da gua constante e igual a 4,18 J g-1 C-1assinale a alternativa que apresenta o nmero aproximado de ftons necessrio para realizar este aquecimento. Dados: constante de Planck (h) =6,63 x 10-34 J.s

(ITA - 2018 - 1 FASE) Uma haste vertical de comprimento L, sem peso, presa a uma articulao T e dispe em sua extremidade de uma pequena massa m que, conforme a figura, toca levemente a quina de um bloco de massa M. Aps uma pequena perturbao, o sistema movimenta-se para a direita. A massa m perde o contato com M no momento em que a haste perfaz um ngulo de com a horizontal. Desconsiderando atritos, assinale a velocidade final do bloco.

(ITA - 2018 - 1 FASE) Entre as substncias CH4, CH3C, CH2Br2,CH2C2, CHBr3 e CBr4.

(ITA - 2018 - 1 FASE) No livro Teoria do Calor (1871), Maxwell, escreveu referindo-se a um recipiente cheio de ar: ... iniciando com uma temperatura uniforme, vamos supor que um recipiente dividido em duas partes por uma divisria na qual existe um pequeno orifcio, e que um ser que pode ver as molculas individualmente abre e fecha esse orifcio de tal modo que permite somente a passagem de molculas rpidas de A para B e somente as lentas de B para A. Assim, sem realizao de trabalho, ele aumentar a temperatura de B e diminuir a temperatura de A em contradio com.... Assinale a opo que melhor completa o texto de Maxwell.

(ITA - 2018 - 1 Fase) Dentre os processos qumicos abaixo, assinale aquele que ocorre em uma nica etapa elementar.

(ITA - 2018 - 1 FASE) (1 questo sobre o texto) A(s) questo(es) refere(m)-se tirinha a seguir: A me de Helga pergunta What did you ever see in that man? porque

(ITA - 2018 - 1 FASE) Considere o texto We recorded VCs conversations and analyzed how differently they talk about female entrepreneurs De acordo com o texto, correto afirmar que

(ITA - 2018 - 1 FASE) Sobre uma prancha horizontal de massa desprezvel e apoiada no centro, dois discos, de massas mAe mBrespectivamente, rolam com as respectivas velocidades vAe vBconstantes, em direo ao centro, do qual distam LAe LBconforme a figura. Com o sistema em equilbrio antes que os discos colidam, a razo vA/vB dada por

(ITA - 2018 - 1 FASE) (5 questo sobre o texto) GOODBYE THINGS, HELLO MINIMALISM: 1CAN LIVING WITH LESS MAKE YOU HAPPIER? Fumio Sasaki owns a roll-up mattress, three shirts and four pairs of socks. After deciding to scorn possessions, he began feeling happier. He explains why. Let me tell you a bit about myself. Im 35 years old, male, single, never been married. I work as an editor at a publishing company. I recently moved from the Nakameguro neighbourhood in Tokyo, where I lived for a decade, to a neighbourhood called Fudomae in a different part of town. 2The rent is cheaper, but the move pretty much wiped out my savings. Some of you may think that Im a loser: an unmarried adult with not much money. The old me would have been way too embarrassed to admit all this. I was filled with useless pride. But I honestly dont care about things like that any more. The reason is very simple: Im perfectly happy just as I am. The reason? I got rid of most of my material possessions. Minimalism is a lifestyle in which 3you reduce your possessions to the least possible. Living with only the bare essentials has not only provided superficial benefits such as the pleasure of a tidy room or the simple ease of cleaning, 4it has also led to a more fundamental shift. Its given me a chance to think about what it really means to be happy. We think that 5the more we have, the happier we will be. 6We never know what tomorrow might bring, so we collect and save as much as we can. This means we need a lot of money, so we gradually start judging people by how much money they have. You convince yourself that you need to make a lot of money so you dont miss out on success. And for you to make money, you need everyone else to spend their money. And so it goes. So I said goodbye to a lot of things, many of which Id had for years. And yet now I live each day with a happier spirit. 7I feel more content now than I ever did in the past. I wasnt always a minimalist. I used to buy a lot of things, believing that all those possessions would increase my self-worth and lead to a happier life. I loved collecting a lot of useless stuff, and I couldnt throw anything away. I was a natural hoarder of knick-knacks that I thought made me an interesting person. At the same time, though, I was always comparing myself with other people who had more or better things, 8which often made me miserable. I couldnt focus on anything, and I was always wasting time. Alcohol was my escape, and I didnt treat women fairly. I didnt try to change; I thought this was all just part of who I was, and I deserved to be unhappy. My apartment wasnt horribly messy; if my girlfriend was coming over for the weekend, I could do enough tidying up to make it look presentable. On a usual day, however, there were books stacked everywhere because there wasnt enough room on my bookshelves. Most I had thumbed through once or twice, thinking that 9I would read them when I had the time. The closet was crammed with what used to be my favorite clothes, most of which Id only worn a few times. The room was filled with all the things Id taken up as hobbies and then gotten tired of. A guitar and amplifier, covered with dust. Conversational English workbooks Id planned to study once I had more free time. Even a fabulous antique camera, 10which of course I had never once put a roll of film in. 11It may sound as if Im exaggerating when I say I started to become a new person. Someone said to me: All you did is throw things away, which is true. 12But by having fewer things around, Ive started feeling happier each day. Im slowly beginning to understand what happiness is. If you are anything like I used to be miserable, constantly comparing yourself with others, or just believing your life sucks 13I think you should try saying goodbye to some of your things. [] Everyone wants to be happy. But trying to buy happiness only makes us happy for a little while. Fonte: adaptado de https://www.theguardian.com/books/2017/apr/12/goodbye-things-hello-minimalism-can-living-with-lessmake-you-happier. Acesso em: 21 mai. 2017. As palavras sublinhadas nos excertos da coluna I foram utilizadas tendo os referentes respectivamente indicados na coluna II. Coluna I Coluna II I. ... it has also led to a more fundamental shift. (ref. 4) living with only the bare essentials II. which often made me miserable. (ref. 8) other people who had more or better things III. ... I would read them when I had the time. (ref. 9) my bookshelves IV. which of course I had never once (ref. 10) a fabulous antique camera Esto corretas

(ITA - 2018 - 1 Fase) Considere as proposies a seguir. I. O alceno C6H12apresenta cinco ismeros. II. Existem trs diferentes compostos com a frmula C2H2Cl2 III. Existem quatro diferentes teres com a frmula C4H10O IV. O trimetilbenzeno tem trs ismeros estruturais. Das proposies acima esto CORRETAS

(ITA - 2018 - 1 FASE) So feitas as seguintes proposies a respeito da produo de biocombustveis: I. A hidrlise cida de triacilgliceris a etapa final na produo do biodiesel. II. Etanol comumente produzido por processo de fermentao, o qual gera CO2como subproduto. III. Na sntese do bioquerosene, podem ser utilizados cidos graxos com cadeias lineares ou cclicas, saturadas ou insaturadas. Das proposies acima, est(o) CORRETA(S)