Questões - AFA | Gabarito e resoluções

(AFA - 2007) Texto para as questes 6 e 7. June 12th, 1997. Diana, Princess of Wales, addresses a seminar on landmines. Here are some excerpts of her speech: I. I welcome this conference on landmines (...) because the world is too little aware of the waste of life, limb and land which antipersonnel landmines are causing among some of the poorest people on earth. Indeed, until my journey to Angola early this year, (...) I was largely unaware of it too. (...) According to the excerpt above the undefined statement means that

(AFA - 2007) A figura abaixo representa as trajetrias de dois projteis A e B lanados no mesmo instante num local onde o campo gravitacional constante e a resistncia do ar desprezvel. Ao passar pelo ponto P, ponto comum de suas trajetrias, os projteis possuam a mesma

(AFA - 2007) Texto para as questes 6 e 7. June 12th, 1997. Diana, Princess of Wales, addresses a seminar on landmines. Here are some excerpts of her speech: I. I welcome this conference on landmines (...) because the world is too little aware of the waste of life, limb and land which antipersonnel landmines are causing among some of the poorest people on earth. Indeed, until my journey to Angola early this year, (...) I was largely unaware of it too. (...) According to Dianas speech we way observe that her first concern is related to the

(AFA - 2007) Duas esteiras matm movimentos uniformes e sincronizados de forma que bolinhas sucessivamente abandonadas em umas delas atingem ordenadamente recipientes conduzidos pela outra. Cada bolinha atinge o recipiente no instante em que a seguinte abandonada. Sabe-se que a velocidade da esteira superior v e que o espaamento das bolinhas a metade da distncia d, entre os recipientes. Sendo g a acelerao da gravidade local, a altura h, entre as esteiras, pode ser calculada por:

(AFA - 2007) Durante um show de patinao, o patinador, representado na figura, descreve uma evoluo circular, com velocidade escalar constante, de raio igual a 10,8 m. Considerando desprezveis quaisquer resistncias, a velocidade do patinador, ao fazer a referida evoluo, igual a Dados: sen 53 = 0,80, cos 53 = 0,60.

(AFA - 2007) Read the paragraph below to answer question 8. Os brasileiros so os grandes beneficiados com a auto-suficincia na produo nacional de petrleo e com os investimentos que esto sendo feitos pela Petrobrs. (Revista PETROBRS, Abril de 2006.) According to the text.

(AFA - 2007) Um projtil de massa m incide horizontalmente sobre uma tbua com velocidade v1e a abandona com velocidade, ainda horizontal, v2. Considerando-se constante a fora exercida pela tbua de espessura d, pode-se afirmar que o tempo de perfurao dado por:

(AFA - 2007) The following extract is from a childrens school science book. Read it and answer questions 9 to 11. When houses are double glazed, only a relatively small amount of heat is lost through the windows. Double glazed windows have two panes of glass and are strapped between them, preventing escaping of the heat. Double glazing ensures that condensation is reduced snd noise is decreased. Heating bills can be reduced when double glazing is installed. People living near busy roads or airports also find that double glazing has to be fitted. (Taken from Exploring Grammar in Context - Cambridge University Press) only a relatively small amount of heat is lost through the windows. The boldface expression in the sentence can only be substituted for

(AFA - 2007) Trs blocos, cujas massas mA= mB= m e mC= 2m, so ligados atravs de fios e polias ideais, conforme a figura. Sabendo-se que C desce com uma acelerao de 1 m/s2e que 0,2 o coeficiente de atrito entre B e a superfcie S, pode-se afirmar que o coeficiente de atrito entre A e S vale

(AFA - 2007) The following extract is from a childrens school science book. Read it and answer questions 9 to 11. When houses are double glazed, only a relatively small amount of heat is lost through the windows. Double glazed windows have two panes of glass and are strapped between them, preventing escaping of the heat. Double glazing ensures that condensation is reduced snd noise is decreased. Heating bills can be reduced when double glazing is installed. People living near busy roads or airports also find that double glazing has to be fitted. (Taken from Exploring Grammar in Context - Cambridge University Press) Mark the option that means Heating bills can be reduced when double glazing is installed.

(AFA - 2007) Com relao fora de atrito, apresentam-se trs situaes e uma afirmao relativa a cada uma. Esto corretas as afirmaes:

(AFA - 2007) The following extract is from a childrens school science book. Read it and answer questions 9 to 11. When houses are double glazed, only a relatively small amount of heat is lost through the windows. Double glazed windows have two panes of glass and are strapped between them, preventing escaping of the heat. Double glazing ensures that condensation is reduced snd noise is decreased. Heating bills can be reduced when double glazing is installed. People living near busy roads or airports also find that double glazing has to be fitted. (Taken from Exploring Grammar in Context - Cambridge University Press) Mark the item that contains the right information about the text.

(AFA - 2007) Uma vela acesa, flutuando em gua, matm-se sempre em equilbrio, ocupando a posio vertical. Sabendo-se que as densidades da vela e da gua so respectivamente 0,8 g/cm3e 1,0 g/m3, qual a frao da vela que permanecer sem queimar, quando a chama se apagar ao entrar em contato com a gua?

(AFA - 2007) Read the article below carefully and answer questions 12 to 14. Fireworks Fireworks constitute a variety of devices used for religious or entertainment purposes. They contain incendiary compounds that produce sound, color, smoke, or movement, or combinations of these. The ingredients consist of fuels, oxidizers, and modifying agents. The fuels used are charcoal, sulfur, antimony, sulfide, and powdered metals. Chlorates and nitrates usually provide oxygen for the reaction, since fireworks do not use atmospheric oxygen. Various colors are abtained from metals salts. Sodium produces yellow; copper, blue green; calcium, red; strontium, scarlet; and barium, green. Picric acid or sulfur tends to intensify the colors, and ammonium salts increase the shades obtainable. Addition of iron and aluminum powder provides sparks and fiery displays. The craft of blending mixtures packaging them is an ancient one in China, where firewoks for entertainment have been manufactured since the 13th century. In many places throughout the United States and Canada the sale of fireworks is restricted by law because of the danger of injury. (The International Encyclopedia) Que alternativa est correta em relao ao texto?

(AFA - 2007) Read the article below carefully and answer questions 12 to 14. Fireworks Fireworks constitute a variety of devices used for religious or entertainment purposes. They contain incendiary compounds that produce sound, color, smoke, or movement, or combinations of these. The ingredients consist of fuels, oxidizers, and modifying agents. The fuels used are charcoal, sulfur, antimony, sulfide, and powdered metals. Chlorates and nitrates usually provide oxygen for the reaction, since fireworks do not use atmospheric oxygen. Various colors are abtained from metals salts. Sodium produces yellow; copper, blue green; calcium, red; strontium, scarlet; and barium, green. Picric acid or sulfur tends to intensify the colors, and ammonium salts increase the shades obtainable. Addition of iron and aluminum powder provides sparks and fiery displays. The craft of blending mixtures packaging them is an ancient one in China, where firewoks for entertainment have been manufactured since the 13th century. In many places throughout the United States and Canada the sale of fireworks is restricted by law because of the danger of injury. (The International Encyclopedia) The craft of blending mistures packaging is an ancient one in China, where fireworks are used for religious purposes. The word onein this sentence