FUVEST 2015
Questão 28863
UPF
(Upf 2015) Considere a função real 
Questão 28935
UPE
(UPE - 2015) A primeira metade do século XVII em Pernambuco foi marcada pela invasão holandesa à capitania. A presença holandesa em Pernambuco durou 24 anos, de 1630 a 1654. A invasão foi motivada por vários fatores, dos quais podemos destacar
Ver questãoQuestão 28939
UFSM
(UFSM - 2014) Comercializavam-se alimentos produzidos na região e produtos importados [...]. Dentre os produtos produzidos na colônia, destacavam-se a farinha de mandioca, de milho e de trigo, feijão, açúcar, rapadura, aguardente, toucinho, charque e carne fresca [...] peixe seco e fresco. Dentre os produtos importados, os de maior procura eram vinagre, azeite, vinho, bacalhau, azeitonas, pimenta-do-reino, especiarias [...] e sal.
Fonte: BRAICK e MOTA. História: das cavernas ao Terceiro Milênio. Vol. 2. São Paulo: Moderna, 2010. p. 84.
Assim, aponte a afirmativa correta, quanto à situação brasileira no período colonial.
Questão 28967
UEFS
On the long list of happy accidents in science, some discoveries prove to be more monumental than others. Stephanie Kwolek’s was one of them. In the mid-1960s, Kwolek, who died June 18 at 90, was working at DuPont—a rare exception in the male-dominated world of chemistry—looking for a new synthetic fiber to use in tires. As she toiled in the lab, she noticed that one mixture of a polymer and a solvent looked different from the rest. Instead of assuming she’d 5 made a mistake, she was curious and followed up on her observation. When her formula was spun into fiber, it proved to be five times as strong as steel. DuPont called it Kevlar.
Kevlar is famous for its protective powers, and thanks to its application in bulletproof vests and body armor (helmets, ballistic facemasks, etc), it has saved countless lives. But that’s not the only reason it landed Kwolek in the National Inventors Hall of Fame. The Kevlar gloves Kwolek wears in the photo above, for example, help workers avoid cuts. Kevlar 10 has also been used to strengthen items from boats and baseball bats to shoelaces and cell phones. And in a nice full-circle twist, it’s used in tires too.
Fill in the parentheses with T (True) or F (False).
About Kevlar, it’s correct to say:
( ) It’s a natural fiber.
( ) It’s a high-strength material.
( ) It was discovered by chance.
( ) It provides protection against different kinds of danger.
The correct sequence, from top to bottom, is
Questão 28968
UEFS
On the long list of happy accidents in science, some discoveries prove to be more monumental than others. Stephanie Kwolek’s was one of them. In the mid-1960s, Kwolek, who died June 18 at 90, was working at DuPont—a rare exception in the male-dominated world of chemistry—looking for a new synthetic fiber to use in tires. As she toiled in the lab, she noticed that one mixture of a polymer and a solvent looked different from the rest. Instead of assuming she’d 5 made a mistake, she was curious and followed up on her observation. When her formula was spun into fiber, it proved to be five times as strong as steel. DuPont called it Kevlar.
Kevlar is famous for its protective powers, and thanks to its application in bulletproof vests and body armor (helmets, ballistic facemasks, etc), it has saved countless lives. But that’s not the only reason it landed Kwolek in the National Inventors Hall of Fame. The Kevlar gloves Kwolek wears in the photo above, for example, help workers avoid cuts. Kevlar 10 has also been used to strengthen items from boats and baseball bats to shoelaces and cell phones. And in a nice full-circle twist, it’s used in tires too.
About Stephanie Kwolek, it’s correct to say:
Ver questãoQuestão 28969
UEFS
On the long list of happy accidents in science, some discoveries prove to be more monumental than others. Stephanie Kwolek’s was one of them. In the mid-1960s, Kwolek, who died June 18 at 90, was working at DuPont—a rare exception in the male-dominated world of chemistry—looking for a new synthetic fiber to use in tires. As she toiled in the lab, she noticed that one mixture of a polymer and a solvent looked different from the rest. Instead of assuming she’d 5 made a mistake, she was curious and followed up on her observation. When her formula was spun into fiber, it proved to be five times as strong as steel. DuPont called it Kevlar.
Kevlar is famous for its protective powers, and thanks to its application in bulletproof vests and body armor (helmets, ballistic facemasks, etc), it has saved countless lives. But that’s not the only reason it landed Kwolek in the National Inventors Hall of Fame. The Kevlar gloves Kwolek wears in the photo above, for example, help workers avoid cuts. Kevlar 10 has also been used to strengthen items from boats and baseball bats to shoelaces and cell phones. And in a nice full-circle twist, it’s used in tires too.
Considering its lifesaving properties, Kevlar has been effectively used in ____________
The only alternative that does not complete this blank correctly is
Ver questãoQuestão 28971
UEFS
On the long list of happy accidents in science, some discoveries prove to be more monumental than others. Stephanie Kwolek’s was one of them. In the mid-1960s, Kwolek, who died June 18 at 90, was working at DuPont—a rare exception in the male-dominated world of chemistry—looking for a new synthetic fiber to use in tires. As she toiled in the lab, she noticed that one mixture of a polymer and a solvent looked different from the rest. Instead of assuming she’d 5 made a mistake, she was curious and followed up on her observation. When her formula was spun into fiber, it proved to be five times as strong as steel. DuPont called it Kevlar.
Kevlar is famous for its protective powers, and thanks to its application in bulletproof vests and body armor (helmets, ballistic facemasks, etc), it has saved countless lives. But that’s not the only reason it landed Kwolek in the National Inventors Hall of Fame. The Kevlar gloves Kwolek wears in the photo above, for example, help workers avoid cuts. Kevlar 10 has also been used to strengthen items from boats and baseball bats to shoelaces and cell phones. And in a nice full-circle twist, it’s used in tires too.
The reason why the products on the left benefit from Kevlar is correctly stated in alternative
Ver questãoQuestão 28972
UEFS
On the long list of happy accidents in science, some discoveries prove to be more monumental than others. Stephanie Kwolek’s was one of them. In the mid-1960s, Kwolek, who died June 18 at 90, was working at DuPont—a rare exception in the male-dominated world of chemistry—looking for a new synthetic fiber to use in tires. As she toiled in the lab, she noticed that one mixture of a polymer and a solvent looked different from the rest. Instead of assuming she’d 5 made a mistake, she was curious and followed up on her observation. When her formula was spun into fiber, it proved to be five times as strong as steel. DuPont called it Kevlar.
Kevlar is famous for its protective powers, and thanks to its application in bulletproof vests and body armor (helmets, ballistic facemasks, etc), it has saved countless lives. But that’s not the only reason it landed Kwolek in the National Inventors Hall of Fame. The Kevlar gloves Kwolek wears in the photo above, for example, help workers avoid cuts. Kevlar 10 has also been used to strengthen items from boats and baseball bats to shoelaces and cell phones. And in a nice full-circle twist, it’s used in tires too.
The word or expression on the left has not been correctly defined in
Ver questãoQuestão 28974
UEFS
(UEFS - 2015/2)
Stephanie Kwolek
The lifesaving inventor of Kevlar
On the long list of happy accidents in science, some discoveries prove to be more monumental than others. Stephanie Kwolek’s was one of them. In the mid-1960s, Kwolek, who died June 18 at 90, was working at DuPont — a rare exception in the male-dominated world of chemistry — looking for a new synthetic fiber to use in tires. As she toiled in the lab, she noticed that one mixture of a polymer and a solvent looked different from the rest. Instead of assuming she’d1 5 made a mistake, she was curious and followed up on her observation. When her formula was spun into fiber, it proved to be five times as strong as steel. DuPont called it Kevlar.
Kevlar is famous for its protective powers, and thanks to its application in bulletproof vests and body armor (helmets, ballistic facemasks, etc), it has saved countless lives. But that’s not the only reason it landed Kwolek in the National Inventors Hall of Fame. The Kevlar gloves Kwolek wears in the photo above, for example, help workers avoid cuts. Kevlar 10 has also been used to strengthen items from boats and baseball bats to shoelaces and cell phones. And in a nice full-circle twist, it’s used in tires too.
ROTHMAN, Lily. Time, Jul 7, 2014. p, 14
“Instead of assuming she’d made a mistake” (ref. 1)
The’ d in this sentence is the contraction of
Ver questãoQuestão 29019
UEFS
(UEFS 2015 - Meio do ano)
The shock of superstorm Sandy last year got a lot of people wondering about better ways to deal with the weather — perhaps even how to change it. John Latham, a climate scientist based in Colorado, has been 5 proposing ways to do that for more than two decades. His studies show that it should be possible to spray fine particles of sea water into clouds, increasing their ability to reflect sunlight and thus reduce temperatures below. Latham argues that global warming is leading to 10 “irreversible and possibly catastrophic consequences” and that the major polluting countries appear unwilling to take dramatic action.
But Latham claims his cloud-seeding techniques would help to hold Earth’s temperature constant “until a 15 clean form of energy is developed to take over from oil, gas, and coal.” He says, quite optimistically, that they could keep the planet’s temperature stable for “perhaps 50 years.” If true, that would be a welcome breather from impending doom. But what’s missing is money to fund 20 large-scale experiments — and perhaps for a reason. One thing we should know by now about our climate is that when you fix one problem, you may create another.
DICKEY, Christopher . BIG THINK: Around the world in six ideas. Newsweek, March 25, 2013, p. 9.
Fill in the parentheses with T (True) or F (False). Considering what the text says about John Latham, it’s correct to say:
( ) John Latham proposes to battle climate change.
( ) He has been working with weather-related issues over twenty years.
( ) He doesn’t think that global warming poses a real threat to the environment.
( ) He’s aware that most polluting countries do not seem to be worried about solving the problem of global warming.
The correct sequence, from top to bottom, is
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