Questões Militares
Para ime
Foram encontradas 867 questões
Resolva questões gratuitamente!
Junte-se a mais de 4 milhões de concurseiros!
What’s in a name?
Henry Louis Gates Jr. (1989)
The question of color takes up much space in these pages, but the question of color, especially in this country, operates to hide the graver questions of the self.
- James Baldwin, 1961
… blood, darky, Tar baby, Kaffir, shine… moor, blackamoor, Jim Crow, spook… quadroon, meriney, red bone, high yellow… Mammy, porch monkey, home, homeboy, George… spearchucker, Leroy, Smokey…mouli, buck, Ethiopian, brother, sistah…
- Trey Ellis, 1989
I had forgotten the incident completely, until I read Trey Elli’s essay, “Remember My Name,” in a recent issue of the Village Voice (June 13, 1989). But there, in the middle of an extended italicized list of the bynames of “the race” (“the race” or “our people” being the terms my parents used in polite or reverential discourse, “jigaboo” or “nigger” more commonly used in anger, jest, or pure disgust), it was: “George”. Now the events of that very brief exchange return to my mind so vividly that I wonder why I had forgotten it.
My father and I were walking home at dusk from his second job. He “moonlighted” as a janitor in the evenings for the telephone company. Every day, but Saturday, he would come home at 3:30 from his regular job at the paper Mill, wash up, eat supper, then at 4:30 head downtown to his second job. He used to make jokes frequently about a union official who moonlighted. I never got the joke, but he and his friends thought it was hilarious. All I knew was that my family always ate well, that my brother and I had new clothes to wear, and that all of the white people in Piedmont, West Virginia, treated my parents with an odd mixture of resentment and respect that even we understood at the time had something directly to do with a small but certain measure of financial security.
He had left a little early that evening because I was with him and I had to be in bed early. I could not have been more than five or six, and we had stopped off at the Cut-Rate Drug Store (where no black person in town but my father could sit down to eat, and eat off real plates with real silverware) so that I could buy some caramel ice cream, two scoops in a wafer cone, please, which I was busy licking when Mr. Wilson walked by.
Mr. Wilson was a very quiet man, whose stony, brooding, silent manner seemed designed to scare off any overtures of friendship, even from white people. He was Irish as was one-third of our village (another third being Italian), the more affluent among whom sent their children to “Catholic School” across the bridge in Maryland. He had white straight hair, like my Uncle Joe, whom he uncannily resembled, and he carried a black worn metal lunch pail, the kind that Riley carried on the television show. My father always spoke to him, and for reasons that we never did understand, he always spoke to my father.
“Hello, Mr. Wilson,” I heard my father say.
“Hello, George.” I stopped licking my ice cream cone, and asked my Dad in a loud voice why Mr. Wilson had called him “George.”
“Doesn’t he know your name, Daddy? Why don’t you tell him your name? Your name isn’t George.”
For a moment I tried to think of who Mr. Wilson was mixing Pop up with. But we didn’t have any Georges among the colored people in Piedmont; nor were there colored Georges living in the neighboring towns and working at the Mill.
“Tell him your name, Daddy.”
“He knows my name, boy,” my father said after a long pause. “He calls all colored people George.” A long silence ensued. It was “one of those things”, as my Mom would put it. Even then, that early, I knew when I was in the presence of “one of those things”, one of those things that provided a glimpse, through a rent curtain, at another world that we could not affect but that affected us. There would be a painful moment of silence, and you would wait for it to give way to a discussion of a black superstar such as Sugar Ray or Jackie Robinson.
“Nobody hits better in a clutch than Jackie Robinson.”
“That’s right. Nobody.”
I never again looked Mr. Wilson in the eye.
Luis Suárez joins anti-racism calls after Dani Alves banana incident
The Barcelona defender Dani Alves has sparked a social media campaign against racism in football as support flooded in from fellow professionals for his decision to eat a banana thrown at him by an opposition fan.
Luis Suárez, Neymar, Hulk, Mario Balotelli and Sergio Agüero were among those who posted pictures of themselves taking bites out of bananas in tribute to Alves' actions in his side's La Liga match at Villarreal on Sunday.
The Fifa president Joseph Blatter has branded the abuse directed at Alves an "outrage" and promised zero tolerance towards discrimination at the World Cup, while Villarreal took swift action by identifying the culprit and handing him a lifetime stadium ban.
Alves' response to the banana being thrown on to the pitch in front of him as he prepared to take a corner was to nonchalantly pick it up, peel it and take a bite before continuing with the game. The 30-year- old, who has been the victim of racist abuse before during his time in La Liga, said: "You need to take these situations with a dose of humour."
Players across Europe paid homage on Twitter and Instagram, including Suárez, who served an eight-match ban for racially abusing Patrice Evra.
Alves's Barça and Brazil team-mate Neymar led the way after posting a picture on Instagram of himself holding a banana, while writing "We are all monkeys". Balotelli, Milan's former Manchester City striker, posted a picture of himself in a similar pose.
Suárez posted a picture on Twitter of himself and Liverpool team-mate Philippe Coutinho taking bites out of bananas, along with the words: "#SayNoToRacism #WeAreAllMonkeys."
(...)
Barça gave their player their "complete support and solidarity" and thanked Villarreal for their "immediate condemnation" of the incident. Villarreal later revealed they had, with the help of fans, found out who the culprit was, had withdrawn his season ticket and banned him from the El Madrigal stadium for life.

Luis Suárez joins anti-racism calls after Dani Alves banana incident
The Barcelona defender Dani Alves has sparked a social media campaign against racism in football as support flooded in from fellow professionals for his decision to eat a banana thrown at him by an opposition fan.
Luis Suárez, Neymar, Hulk, Mario Balotelli and Sergio Agüero were among those who posted pictures of themselves taking bites out of bananas in tribute to Alves' actions in his side's La Liga match at Villarreal on Sunday.
The Fifa president Joseph Blatter has branded the abuse directed at Alves an "outrage" and promised zero tolerance towards discrimination at the World Cup, while Villarreal took swift action by identifying the culprit and handing him a lifetime stadium ban.
Alves' response to the banana being thrown on to the pitch in front of him as he prepared to take a corner was to nonchalantly pick it up, peel it and take a bite before continuing with the game. The 30-year- old, who has been the victim of racist abuse before during his time in La Liga, said: "You need to take these situations with a dose of humour."
Players across Europe paid homage on Twitter and Instagram, including Suárez, who served an eight-match ban for racially abusing Patrice Evra.
Alves's Barça and Brazil team-mate Neymar led the way after posting a picture on Instagram of himself holding a banana, while writing "We are all monkeys". Balotelli, Milan's former Manchester City striker, posted a picture of himself in a similar pose.
Suárez posted a picture on Twitter of himself and Liverpool team-mate Philippe Coutinho taking bites out of bananas, along with the words: "#SayNoToRacism #WeAreAllMonkeys."
(...)
Barça gave their player their "complete support and solidarity" and thanked Villarreal for their "immediate condemnation" of the incident. Villarreal later revealed they had, with the help of fans, found out who the culprit was, had withdrawn his season ticket and banned him from the El Madrigal stadium for life.

What’s in a name?
Henry Louis Gates Jr. (1989)
The question of color takes up much space in these pages, but the question of color, especially in this country, operates to hide the graver questions of the self.
- James Baldwin, 1961 … blood, darky, Tar baby, Kaffir, shine… moor, blackamoor, Jim Crow, spook… quadroon, meriney, red bone, high yellow… Mammy, porch monkey, home, homeboy, George… spearchucker, Leroy, Smokey…mouli, buck, Ethiopian, brother, sistah…
- Trey Ellis, 1989
I had forgotten the incident completely, until I read Trey Elli’s essay, “Remember My Name,” in a recent issue of the Village Voice (June 13, 1989). But there, in the middle of an extended italicized list of the bynames of “the race” (“the race” or “our people” being the terms my parents used in polite or reverential discourse, “jigaboo” or “nigger” more commonly used in anger, jest, or pure disgust), it was: “George”. Now the events of that very brief exchange return to my mind so vividly that I wonder why I had forgotten it. My father and I were walking home at dusk from his second job. He “moonlighted” as a janitor in the evenings for the telephone company. Every day, but Saturday, he would come home at 3:30 from his regular job at the paper Mill, wash up, eat supper, then at 4:30 head downtown to his second job. He used to make jokes frequently about a union official who moonlighted. I never got the joke, but he and his friends thought it was hilarious. All I knew was that my family always ate well, that my brother and I had new clothes to wear, and that all of the white people in Piedmont, West Virginia, treated my parents with an odd mixture of resentment and respect that even we understood at the time had something directly to do with a small but certain measure of financial security. He had left a little early that evening because I was with him and I had to be in bed early. I could not have been more than five or six, and we had stopped off at the Cut-Rate Drug Store (where no black person in town but my father could sit down to eat, and eat off real plates with real silverware) so that I could buy some caramel ice cream, two scoops in a wafer cone, please, which I was busy licking when Mr. Wilson walked by. Mr. Wilson was a very quiet man, whose stony, brooding, silent manner seemed designed to scare off any overtures of friendship, even from white people. He was Irish as was one-third of our village (another third being Italian), the more affluent among whom sent their children to “Catholic School” across the bridge in Maryland. He had white straight hair, like my Uncle Joe, whom he uncannily resembled, and he carried a black worn metal lunch pail, the kind that Riley carried on the television show. My father always spoke to him, and for reasons that we never did understand, he always spoke to my father. “Hello, Mr. Wilson,” I heard my father say. “Hello, George.”
I stopped licking my ice cream cone, and asked my Dad in a loud voice why Mr. Wilson had called him “George.” “Doesn’t he know your name, Daddy? Why don’t you tell him your name? Your name isn’t George.” For a moment I tried to think of who Mr. Wilson was mixing Pop up with. But we didn’t have any Georges among the colored people in Piedmont; nor were there colored Georges living in the neighboring towns and working at the Mill. “Tell him your name, Daddy.” “He knows my name, boy,” my father said after a long pause. “He calls all colored people George.” A long silence ensued. It was “one of those things”, as my Mom would put it. Even then, that early, I knew when I was in the presence of “one of those things”, one of those things that provided a glimpse, through a rent curtain, at another world that we could not affect but that affected us. There would be a painful moment of silence, and you would wait for it to give way to a discussion of a black superstar such as Sugar Ray or Jackie Robinson. “Nobody hits better in a clutch than Jackie Robinson.” “That’s right. Nobody.” I never again looked Mr. Wilson in the eye.
Texts 1 and 2 deal with the same theme: racism. From text 1, we can infer that
1a Etapa: o composto A (C7H6O) sofre oxidação em solução básica de permanganato de potássio. O produto gerado, após neutralizado, é o ácido benzoico;
2a Etapa: o ácido benzoico reage com etanol em solução ácida, produzindo o composto B e água;
3a Etapa: o composto B sofre forte redução com hidreto de lítio-alumínio em éter, gerando dois produtos que, depois de neutralizados, formam então o composto C e o etanol.
Considerando as etapas supracitadas, são feitas as seguintes afirmações:
I) o composto A e o composto C são isômeros.
II) o composto B é um éster.
III) o composto B é o acetato de benzila.
Com base na análise das afirmações acima, assinale a opção correta.

No Misturador 1, antes da adição de 100 mL de uma solução aquosa de sulfato de amônio 20 g/L, encontram-se 100 mL de uma solução aquosa composta por massas iguais de nitrato de prata, nitrato cúprico e nitrato de chumbo (II), de concentração total 60 g/L.
Ao Misturador 2, que contém o material passante do Filtro 1, adicionam-se 100 mL de uma solução aquosa de carbonato de sódio 40 g/L e uma pequena quantidade de uma solução de hidróxido de sódio objetivando o adequado ajuste do pH de precipitação para, em seguida, proceder a filtração. Sobre os produtos de filtração, pode se dizer que:

marque a alternativa correta, considerando-se as condições de 1 atm e 25 ?.
I. Acetona;
II. Neopentano;
III. Fluoreto de lítio;
IV. Etanamida;
V. Pentano.
Assinale a alternativa que apresenta a sequência correta, conforme a ordem crescente de ponto de ebulição.

Um capacitor de placas paralelas carregado gera um campo elétrico constante em seu interior. Num instante inicial, uma partícula de massa m e carga +Q, localizada no interior do capacitor, é liberada com velocidade nula. Neste mesmo instante, o capacitor começa a girar com velocidade angular constante ω em torno do eixo z. Enquanto estiver no interior do capacitor e antes de colidir com uma das placas, a trajetória da carga será uma
Observação:
• desconsidere as ações dos campos magnético e gravitacional.

A figura acima apresenta um circuito elétrico e um sistema de balança. O circuito é composto por uma Fonte em U, cinco resistores, um capacitor, um quadrado formado por um fio homogêneo, duas chaves e um eletroímã interligados por fios de resistência desprezível. O sistema de balança é composto por um bloco e um balde de massa desprezível que está sendo preenchido por água através de um dispositivo. Sabe-se que, imediatamente após o carregamento do capacitor, a chave Cha se abrirá e a chave Chb se fechará, fazendo com que o capacitor alimente o eletroímã, de modo que este acione um dispositivo que interromperá o fluxo de água para o balde. O valor do capacitor para que o sistema balde e bloco fique em equilíbrio e a energia dissipada no fio a partir do momento em que o capacitor esteja completamente carregado até o vigésimo segundo são, respectivamente
Dados:
• U = 100 V;
• resistência total do fio: 32 kΩ
• fluxo de água: 200 ml/s;
• massa específica da água = 1 g/cm3 ;
• massa do bloco: 0,8 kg.
Observações:
• despreze a massa do balde;
• considere o capacitor carregado em um tempo correspondente a cinco vezes a constante de tempo.

Em um laboratório localizado em um planeta desconhecido, um grupo de pesquisadores observa o deslizamento de um bloco em um plano inclinado. Nota-se que o bloco parte do repouso e atinge o final da rampa em 10 segundos e com velocidade de 4 m/s. Neste mesmo ambiente, encontra-se instalado um manômetro do tipo “tubo em U" que tem por objetivo medir o diferencial de pressão entre dois reservatórios que se localizam em cada ponta do tubo. Sabe-se que o fluido manométrico é feito através da mistura da mesma quantidade em massa de dois óleos miscíveis distintos. Levando em conta os dados abaixo, pode-se afirmar que o coeficiente de atrito (dinâmico) entre o bloco e o plano inclinado na situação física descrita é:
Dados:
• altura máxima do plano em relação à horizontal: 6 m;
• comprimento da rampa: 10 m;
• diferença entre as pressões nos reservatórios: 0,18 kPa;
• cota de desnível do fluido manométrico: 30 cm;
• massas específicas dos óleos: 0,3 g/cm3 , 0,9 g/cm3 .
Observação:
• considere que a massa, em kg, da mistura dos óleos é igual a soma das massas, em kg, das massas de cada óleo.

A Figura 1 apresenta um sistema composto por um trilho fixo em U e uma barra móvel que se desloca na vertival com velocidade v suspensa por um balão de massa desprezível. O trilho e a barra são condutores elétricos e parmenecem sempre em contato sem atrito. Este conjunto está em uma região sujeita a uma densidade de fluxo magnético
que forma com a horizontal uma ângulo θ, como ilustrado na Figura 2. Diante do exposto, o valor da corrente induzida no sistema, em ampères, no estado estacionário é:
• massa da barra: 1 kg;
• aceleração da gravidade g: 10 m/s2 ;
• ângulo θ entre a horizontal e o vetor B: 60° ;
• massa específica do ar: 1,2 kg/m3 ;
• volume constante do balão: 0,5 m3 ;
• comprimento da barra entre os trilhos: 0,2 m;
• densidade de fluxo magnético B: 4 T.
Observação:
• despreze a massa do balão com o hélio e o atrito entre a barra e os trilhos.

A figura acima representa uma lâmina de espessura e densidade constantes na forma de um semicírculo de raio a. A lâmina está suspensa por um fio no ponto A e o seu centro de massa está a uma distância de 4a/3π da reta que contém o segmento DB. Uma das metades da lâmina é retirada após um corte feito ao longo do segmento AC. Para a metade que permanece suspensa pelo ponto A nessa nova situação de equilíbrio, a tangente do ângulo que a direção do segmento de reta AC passa a fazer com a vertical é

A figura acima mostra um sistema posicionado no vácuo formado por um recipiente contendo um gás ideal de massa molecular M e calor específico c em duas situações distintas. Esse recipiente é fechado por um êmbolo preso a uma mola de constante elástica k, ambos de massa desprezível. Inicialmente (Situação 1), o sistema encontra-se em uma temperatura T0, o êmbolo está a uma altura h0 em relação à base do recipiente e a mola comprimida de x0 em relação ao seu comprimento relaxado.
Se uma quantidade de calor Q for fornecida ao gás (Situação 2), fazendo com que o êmbolo se desloque para uma altura h e a mola passe a estar comprimida de x, a grandeza que varia linearmente com Q é

A figura acima mostra um conjunto massa-mola conectado a uma roldana por meio de um cabo. Na extremidade do cabo há um recipiente na forma de um tronco de cone de 10 cm x 20 cm x 30 cm de dimensões (diâmetro da base superior x diâmetro da base inferior x altura) e com peso desprezível. O cabo é inextensível e também tem peso desprezível. Não há atrito entre o cabo e a roldana. No estado inicial, o carro encontra-se em uma posição tal que o alongamento na mola é nulo e o cabo não se encontra tracionado. A partir de um instante, o recipiente começa a ser completado lentamente com um fluido com massa específica de 3000 kg/m3 . Sabendo que o coeficiente de rigidez da mola é 3300 N/m e a aceleração da gravidade é 10 m/s2 , o alongamento da mola no instante em que o recipiente se encontrar totalmente cheio, em cm, é igual a