Questões: Universidade do Estado de Minas Gerais (UEMG) — com gabarito

Leia o fragmento a seguir:

“[Essa] é uma fonte de energia limpa, simples de ser obtida e que pode solucionar também parte do problema da quantidade de lixo que é descartado. Trata-se de uma mistura gasosa de metano e dióxido de carbono a partir da decomposição de restos orgânicos. Uma das formas de acelerar esse processo biológico é por meio de uso de biodigestores”.

Fonte: BALDRAIS, André. Ser protagonista – geografia. São Paulo. Edições SM. 2016. p. 66.

O trecho se refere a um tipo de energia alternativa denominada:

Leia o fragmento a seguir:

“[Esse grupo é formado por] países emergentes de grande expressão populacional e territorial, que, por apresentarem grande crescimento econômico e recursos produtivos, passaram a participar com maior intensidade da dinâmica global [especialmente, na primeira década do século XXI]. (...). Esse grupo já demonstrou que tem força econômica capaz de impor seus interesses no cenário global [pois] dispõem de consideráveis recursos econômicos, humanos e naturais e têm obtido maior protagonismo político diante de organismos internacionais, como o FMI e o Banco Mundial. [Visando ampliar a cooperação entre seus membros foi criado um banco de reservas emergenciais para socorro econômico entre os participantes, se necessário] ”.

Fonte: BALDRAIS, André. Ser protagonista – geografia. São Paulo. Edições SM. 2016. p. 115. Adaptado.

O trecho descreve o grupo, cuja sigla é:

Leia o fragmento a seguir:

“A revolta já tinha mais de quatro meses de vida e as vantagens do governo eram problemáticas. No Sul, a insurreição chegava às portas de São Paulo, e só a Lapa resistia tenazmente, uma das poucas páginas dignas e limpas de todo aquele enxurro de paixões. A pequena cidade tinha dentro de suas trincheiras o Coronel Gomes Carneiro, uma energia, uma vontade, verdadeiramente isso, porque era sereno, confiante e soube tornar verdade a gasta frase grandiloquente: resistir até a morte.

A ilha do Governador tinha sido ocupada e Magé tomado; os revoltosos, porém, tinham a vasta baía e a barra apertada, por onde saíam e entravam, sem temer o estorvo das fortalezas.

As violências, os crimes que tinham assinalado esses dois marcos de atividade guerreira do governo, chegavam ao ouvido de Quaresma e ele sofria.

Da ilha do Governador fez-se uma verdadeira mudança de móveis, roupas e outros haveres. O que não podia ser transplantado era destruído pelo fogo e pelo machado.

A ocupação deixou lá a mais execranda memória e até hoje os seus habitantes ainda se recordam dolorosamente de um capitão, patriótico ou da guarda nacional, Ortiz, pela sua ferocidade e insofrido gosto pelo saque e outras vexações”.

Fonte: BARRETO, Lima. Triste fim de Policarpo Quaresma. Rio de Janeiro. Bestbolso. 2013. p. 211.

O trecho expressa elementos que fazem parte das diferentes formas de produção e organização do espaço brasileiro ao longo de sua construção histórica e humana. A partir de uma perspectiva da geografia humana, é CORRETO afirmar que o trecho ressalta a Revolta da

               Fire Devastates Brazil's Oldest Science Museum

The overnight inferno likely claimed fossils, cultural artifacts, and more irreplaceable collections amassed over 200 years.

                                                                                    By Michael Greshko                                                   ______________________________________

                                                                   PUBLISHED September 6, 2018

Major pieces of Brazil's scientific and cultural heritage went up in smoke on September 2, as a devastating fire ripped through much of Rio de Janeiro's Museu Nacional, or National Museum. Founded in 1818, the museum is Brazil's oldest scientific institution and one of the largest and most renowned museums in Latin America, amassing a collection of some 20 million scientifically and culturally invaluable artifacts.

The Museu Nacional's holdings include Luzia, an 11,500-year-old skull considered one of South America's oldest human fossils, as well as the bones of uniquely Brazilian creatures such as the long-necked dinosaur Maxakalisaurus. Because of the auction tastes of Brazil's 19th-century emperors, the Museu Nacional also ended up with Latin America's oldest collection of Egyptian mummies and artifacts.

Even the building holds historical importance: It housed the exiled Portuguese royal family from 1808 to 1821, after they fled to Rio de Janeiro in 1807 to escape Napoleon. The complex also served as the palace for Brazil's post-independence emperors until 1889, before the museum collections were transferred there in 1902. In an September 5 email, Museu Nacional curator Débora Pires wrote that the entomology and arachnology collections were completely destroyed, as was most of the mollusk collection. However, technicians had braved the fire to save 80 percent of the mollusk holotypes—the specimens that formally serve as the global references for a given species. The museum's vertebrate specimens, herbarium, and library were housed separately and survived the fire.

(…)

An Irreplaceable Loss

It's not yet clear how the fire started, but it did begin after the museum was closed to the public, and no injuries have yet been reported. Firefighters worked through the night to douse the burnt-out shell of the main building, but it seems the blaze has already seared a gaping hole in many scientists' careers.

“The importance of the collections that were lost couldn't be overstated,” says Luiz Rocha, a Brazilian ichthyologist now at the California Academy of Sciences who has visited the Museu Nacional several times to study its collections. “They were unique as it gets: Many of them were irreplaceable, there's no way to put a monetary value on it.”

“In terms of [my] life-long research agenda, I'm pretty much lost,” says Marcus Guidoti, a Brazilian entomologist finishing up his Ph.D. in a program co-run by Brazil's Federal University of Rio Grande do Sul.

Guidoti studies lace bugs, an insect family with more than 2,000 species worldwide. The Museu Nacional held one of the world's largest lace bug collections, but the fire likely destroyed it and the rest of the museum's five million arthropod specimens. “Those type specimens can't be replaced, and they are crucial to understand the species,” he says by text message. “If I was willing to keep working on this family in this region of the globe, this was definitely a big hit.”

Paleontologist Dimila Mothé, a postdoctoral researcher at the Federal University of the State of Rio de Janeiro, adds that the blows to science extend beyond the collections themselves. “It's not only the cultural history, the natural history, but all the theses and research developed there,” she says. “Most of the laboratories there were lost, too, and the research of several professors. I'm not sure you can say the impact of what was lost.”

Brazil’s indigenous knowledge also has suffered. The Museu Nacional housed world-renowned collections of indigenous objects, as well as many audio recordings of indigenous languages from all over Brazil. Some of these recordings, now lost, were of languages that are no longer spoken.

“I have no words to say how horrible this is,” says Brazilian anthropologist Mariana Françozo, an expert on South American indigenous objects at Leiden University. “The indigenous collections are a tremendous loss … we can no longer study them, we can no longer understand what our ancestors did. It’s heartbreaking.” 

On Monday, The Brazilian publication G1 Rio reported that ashes of burned documents—some still flecked in notes or illustrations—have rained down from the sky more than a mile away from the Museu Nacional, thrown aloft by the inferno.

(…)

Editor's Note: This story was updated on September 6, 2018, with new details about which artifacts survived the fire. 

Taken from: https://www.nationalgeographic.com/science/2018/09/news-museu-nacional-fire-rio-de-janeiro-natural-history/. Access: 11 dez. 2018.

               Fire Devastates Brazil's Oldest Science Museum

The overnight inferno likely claimed fossils, cultural artifacts, and more irreplaceable collections amassed over 200 years.

                                                                                    By Michael Greshko                                                   ______________________________________

                                                                   PUBLISHED September 6, 2018

Major pieces of Brazil's scientific and cultural heritage went up in smoke on September 2, as a devastating fire ripped through much of Rio de Janeiro's Museu Nacional, or National Museum. Founded in 1818, the museum is Brazil's oldest scientific institution and one of the largest and most renowned museums in Latin America, amassing a collection of some 20 million scientifically and culturally invaluable artifacts.

The Museu Nacional's holdings include Luzia, an 11,500-year-old skull considered one of South America's oldest human fossils, as well as the bones of uniquely Brazilian creatures such as the long-necked dinosaur Maxakalisaurus. Because of the auction tastes of Brazil's 19th-century emperors, the Museu Nacional also ended up with Latin America's oldest collection of Egyptian mummies and artifacts.

Even the building holds historical importance: It housed the exiled Portuguese royal family from 1808 to 1821, after they fled to Rio de Janeiro in 1807 to escape Napoleon. The complex also served as the palace for Brazil's post-independence emperors until 1889, before the museum collections were transferred there in 1902. In an September 5 email, Museu Nacional curator Débora Pires wrote that the entomology and arachnology collections were completely destroyed, as was most of the mollusk collection. However, technicians had braved the fire to save 80 percent of the mollusk holotypes—the specimens that formally serve as the global references for a given species. The museum's vertebrate specimens, herbarium, and library were housed separately and survived the fire.

(…)

An Irreplaceable Loss

It's not yet clear how the fire started, but it did begin after the museum was closed to the public, and no injuries have yet been reported. Firefighters worked through the night to douse the burnt-out shell of the main building, but it seems the blaze has already seared a gaping hole in many scientists' careers.

“The importance of the collections that were lost couldn't be overstated,” says Luiz Rocha, a Brazilian ichthyologist now at the California Academy of Sciences who has visited the Museu Nacional several times to study its collections. “They were unique as it gets: Many of them were irreplaceable, there's no way to put a monetary value on it.”

“In terms of [my] life-long research agenda, I'm pretty much lost,” says Marcus Guidoti, a Brazilian entomologist finishing up his Ph.D. in a program co-run by Brazil's Federal University of Rio Grande do Sul.

Guidoti studies lace bugs, an insect family with more than 2,000 species worldwide. The Museu Nacional held one of the world's largest lace bug collections, but the fire likely destroyed it and the rest of the museum's five million arthropod specimens. “Those type specimens can't be replaced, and they are crucial to understand the species,” he says by text message. “If I was willing to keep working on this family in this region of the globe, this was definitely a big hit.”

Paleontologist Dimila Mothé, a postdoctoral researcher at the Federal University of the State of Rio de Janeiro, adds that the blows to science extend beyond the collections themselves. “It's not only the cultural history, the natural history, but all the theses and research developed there,” she says. “Most of the laboratories there were lost, too, and the research of several professors. I'm not sure you can say the impact of what was lost.”

Brazil’s indigenous knowledge also has suffered. The Museu Nacional housed world-renowned collections of indigenous objects, as well as many audio recordings of indigenous languages from all over Brazil. Some of these recordings, now lost, were of languages that are no longer spoken.

“I have no words to say how horrible this is,” says Brazilian anthropologist Mariana Françozo, an expert on South American indigenous objects at Leiden University. “The indigenous collections are a tremendous loss … we can no longer study them, we can no longer understand what our ancestors did. It’s heartbreaking.” 

On Monday, The Brazilian publication G1 Rio reported that ashes of burned documents—some still flecked in notes or illustrations—have rained down from the sky more than a mile away from the Museu Nacional, thrown aloft by the inferno.

(…)

Editor's Note: This story was updated on September 6, 2018, with new details about which artifacts survived the fire. 

Taken from: https://www.nationalgeographic.com/science/2018/09/news-museu-nacional-fire-rio-de-janeiro-natural-history/. Access: 11 dez. 2018.

               Fire Devastates Brazil's Oldest Science Museum

The overnight inferno likely claimed fossils, cultural artifacts, and more irreplaceable collections amassed over 200 years.

                                                                                    By Michael Greshko                                                   ______________________________________

                                                                   PUBLISHED September 6, 2018

Major pieces of Brazil's scientific and cultural heritage went up in smoke on September 2, as a devastating fire ripped through much of Rio de Janeiro's Museu Nacional, or National Museum. Founded in 1818, the museum is Brazil's oldest scientific institution and one of the largest and most renowned museums in Latin America, amassing a collection of some 20 million scientifically and culturally invaluable artifacts.

The Museu Nacional's holdings include Luzia, an 11,500-year-old skull considered one of South America's oldest human fossils, as well as the bones of uniquely Brazilian creatures such as the long-necked dinosaur Maxakalisaurus. Because of the auction tastes of Brazil's 19th-century emperors, the Museu Nacional also ended up with Latin America's oldest collection of Egyptian mummies and artifacts.

Even the building holds historical importance: It housed the exiled Portuguese royal family from 1808 to 1821, after they fled to Rio de Janeiro in 1807 to escape Napoleon. The complex also served as the palace for Brazil's post-independence emperors until 1889, before the museum collections were transferred there in 1902. In an September 5 email, Museu Nacional curator Débora Pires wrote that the entomology and arachnology collections were completely destroyed, as was most of the mollusk collection. However, technicians had braved the fire to save 80 percent of the mollusk holotypes—the specimens that formally serve as the global references for a given species. The museum's vertebrate specimens, herbarium, and library were housed separately and survived the fire.

(…)

An Irreplaceable Loss

It's not yet clear how the fire started, but it did begin after the museum was closed to the public, and no injuries have yet been reported. Firefighters worked through the night to douse the burnt-out shell of the main building, but it seems the blaze has already seared a gaping hole in many scientists' careers.

“The importance of the collections that were lost couldn't be overstated,” says Luiz Rocha, a Brazilian ichthyologist now at the California Academy of Sciences who has visited the Museu Nacional several times to study its collections. “They were unique as it gets: Many of them were irreplaceable, there's no way to put a monetary value on it.”

“In terms of [my] life-long research agenda, I'm pretty much lost,” says Marcus Guidoti, a Brazilian entomologist finishing up his Ph.D. in a program co-run by Brazil's Federal University of Rio Grande do Sul.

Guidoti studies lace bugs, an insect family with more than 2,000 species worldwide. The Museu Nacional held one of the world's largest lace bug collections, but the fire likely destroyed it and the rest of the museum's five million arthropod specimens. “Those type specimens can't be replaced, and they are crucial to understand the species,” he says by text message. “If I was willing to keep working on this family in this region of the globe, this was definitely a big hit.”

Paleontologist Dimila Mothé, a postdoctoral researcher at the Federal University of the State of Rio de Janeiro, adds that the blows to science extend beyond the collections themselves. “It's not only the cultural history, the natural history, but all the theses and research developed there,” she says. “Most of the laboratories there were lost, too, and the research of several professors. I'm not sure you can say the impact of what was lost.”

Brazil’s indigenous knowledge also has suffered. The Museu Nacional housed world-renowned collections of indigenous objects, as well as many audio recordings of indigenous languages from all over Brazil. Some of these recordings, now lost, were of languages that are no longer spoken.

“I have no words to say how horrible this is,” says Brazilian anthropologist Mariana Françozo, an expert on South American indigenous objects at Leiden University. “The indigenous collections are a tremendous loss … we can no longer study them, we can no longer understand what our ancestors did. It’s heartbreaking.” 

On Monday, The Brazilian publication G1 Rio reported that ashes of burned documents—some still flecked in notes or illustrations—have rained down from the sky more than a mile away from the Museu Nacional, thrown aloft by the inferno.

(…)

Editor's Note: This story was updated on September 6, 2018, with new details about which artifacts survived the fire. 

Taken from: https://www.nationalgeographic.com/science/2018/09/news-museu-nacional-fire-rio-de-janeiro-natural-history/. Access: 11 dez. 2018.

               Fire Devastates Brazil's Oldest Science Museum

The overnight inferno likely claimed fossils, cultural artifacts, and more irreplaceable collections amassed over 200 years.

                                                                                    By Michael Greshko                                                   ______________________________________

                                                                   PUBLISHED September 6, 2018

Major pieces of Brazil's scientific and cultural heritage went up in smoke on September 2, as a devastating fire ripped through much of Rio de Janeiro's Museu Nacional, or National Museum. Founded in 1818, the museum is Brazil's oldest scientific institution and one of the largest and most renowned museums in Latin America, amassing a collection of some 20 million scientifically and culturally invaluable artifacts.

The Museu Nacional's holdings include Luzia, an 11,500-year-old skull considered one of South America's oldest human fossils, as well as the bones of uniquely Brazilian creatures such as the long-necked dinosaur Maxakalisaurus. Because of the auction tastes of Brazil's 19th-century emperors, the Museu Nacional also ended up with Latin America's oldest collection of Egyptian mummies and artifacts.

Even the building holds historical importance: It housed the exiled Portuguese royal family from 1808 to 1821, after they fled to Rio de Janeiro in 1807 to escape Napoleon. The complex also served as the palace for Brazil's post-independence emperors until 1889, before the museum collections were transferred there in 1902. In an September 5 email, Museu Nacional curator Débora Pires wrote that the entomology and arachnology collections were completely destroyed, as was most of the mollusk collection. However, technicians had braved the fire to save 80 percent of the mollusk holotypes—the specimens that formally serve as the global references for a given species. The museum's vertebrate specimens, herbarium, and library were housed separately and survived the fire.

(…)

An Irreplaceable Loss

It's not yet clear how the fire started, but it did begin after the museum was closed to the public, and no injuries have yet been reported. Firefighters worked through the night to douse the burnt-out shell of the main building, but it seems the blaze has already seared a gaping hole in many scientists' careers.

“The importance of the collections that were lost couldn't be overstated,” says Luiz Rocha, a Brazilian ichthyologist now at the California Academy of Sciences who has visited the Museu Nacional several times to study its collections. “They were unique as it gets: Many of them were irreplaceable, there's no way to put a monetary value on it.”

“In terms of [my] life-long research agenda, I'm pretty much lost,” says Marcus Guidoti, a Brazilian entomologist finishing up his Ph.D. in a program co-run by Brazil's Federal University of Rio Grande do Sul.

Guidoti studies lace bugs, an insect family with more than 2,000 species worldwide. The Museu Nacional held one of the world's largest lace bug collections, but the fire likely destroyed it and the rest of the museum's five million arthropod specimens. “Those type specimens can't be replaced, and they are crucial to understand the species,” he says by text message. “If I was willing to keep working on this family in this region of the globe, this was definitely a big hit.”

Paleontologist Dimila Mothé, a postdoctoral researcher at the Federal University of the State of Rio de Janeiro, adds that the blows to science extend beyond the collections themselves. “It's not only the cultural history, the natural history, but all the theses and research developed there,” she says. “Most of the laboratories there were lost, too, and the research of several professors. I'm not sure you can say the impact of what was lost.”

Brazil’s indigenous knowledge also has suffered. The Museu Nacional housed world-renowned collections of indigenous objects, as well as many audio recordings of indigenous languages from all over Brazil. Some of these recordings, now lost, were of languages that are no longer spoken.

“I have no words to say how horrible this is,” says Brazilian anthropologist Mariana Françozo, an expert on South American indigenous objects at Leiden University. “The indigenous collections are a tremendous loss … we can no longer study them, we can no longer understand what our ancestors did. It’s heartbreaking.” 

On Monday, The Brazilian publication G1 Rio reported that ashes of burned documents—some still flecked in notes or illustrations—have rained down from the sky more than a mile away from the Museu Nacional, thrown aloft by the inferno.

(…)

Editor's Note: This story was updated on September 6, 2018, with new details about which artifacts survived the fire. 

Taken from: https://www.nationalgeographic.com/science/2018/09/news-museu-nacional-fire-rio-de-janeiro-natural-history/. Access: 11 dez. 2018.

               Fire Devastates Brazil's Oldest Science Museum

The overnight inferno likely claimed fossils, cultural artifacts, and more irreplaceable collections amassed over 200 years.

                                                                                    By Michael Greshko                                                   ______________________________________

                                                                   PUBLISHED September 6, 2018

Major pieces of Brazil's scientific and cultural heritage went up in smoke on September 2, as a devastating fire ripped through much of Rio de Janeiro's Museu Nacional, or National Museum. Founded in 1818, the museum is Brazil's oldest scientific institution and one of the largest and most renowned museums in Latin America, amassing a collection of some 20 million scientifically and culturally invaluable artifacts.

The Museu Nacional's holdings include Luzia, an 11,500-year-old skull considered one of South America's oldest human fossils, as well as the bones of uniquely Brazilian creatures such as the long-necked dinosaur Maxakalisaurus. Because of the auction tastes of Brazil's 19th-century emperors, the Museu Nacional also ended up with Latin America's oldest collection of Egyptian mummies and artifacts.

Even the building holds historical importance: It housed the exiled Portuguese royal family from 1808 to 1821, after they fled to Rio de Janeiro in 1807 to escape Napoleon. The complex also served as the palace for Brazil's post-independence emperors until 1889, before the museum collections were transferred there in 1902. In an September 5 email, Museu Nacional curator Débora Pires wrote that the entomology and arachnology collections were completely destroyed, as was most of the mollusk collection. However, technicians had braved the fire to save 80 percent of the mollusk holotypes—the specimens that formally serve as the global references for a given species. The museum's vertebrate specimens, herbarium, and library were housed separately and survived the fire.

(…)

An Irreplaceable Loss

It's not yet clear how the fire started, but it did begin after the museum was closed to the public, and no injuries have yet been reported. Firefighters worked through the night to douse the burnt-out shell of the main building, but it seems the blaze has already seared a gaping hole in many scientists' careers.

“The importance of the collections that were lost couldn't be overstated,” says Luiz Rocha, a Brazilian ichthyologist now at the California Academy of Sciences who has visited the Museu Nacional several times to study its collections. “They were unique as it gets: Many of them were irreplaceable, there's no way to put a monetary value on it.”

“In terms of [my] life-long research agenda, I'm pretty much lost,” says Marcus Guidoti, a Brazilian entomologist finishing up his Ph.D. in a program co-run by Brazil's Federal University of Rio Grande do Sul.

Guidoti studies lace bugs, an insect family with more than 2,000 species worldwide. The Museu Nacional held one of the world's largest lace bug collections, but the fire likely destroyed it and the rest of the museum's five million arthropod specimens. “Those type specimens can't be replaced, and they are crucial to understand the species,” he says by text message. “If I was willing to keep working on this family in this region of the globe, this was definitely a big hit.”

Paleontologist Dimila Mothé, a postdoctoral researcher at the Federal University of the State of Rio de Janeiro, adds that the blows to science extend beyond the collections themselves. “It's not only the cultural history, the natural history, but all the theses and research developed there,” she says. “Most of the laboratories there were lost, too, and the research of several professors. I'm not sure you can say the impact of what was lost.”

Brazil’s indigenous knowledge also has suffered. The Museu Nacional housed world-renowned collections of indigenous objects, as well as many audio recordings of indigenous languages from all over Brazil. Some of these recordings, now lost, were of languages that are no longer spoken.

“I have no words to say how horrible this is,” says Brazilian anthropologist Mariana Françozo, an expert on South American indigenous objects at Leiden University. “The indigenous collections are a tremendous loss … we can no longer study them, we can no longer understand what our ancestors did. It’s heartbreaking.” 

On Monday, The Brazilian publication G1 Rio reported that ashes of burned documents—some still flecked in notes or illustrations—have rained down from the sky more than a mile away from the Museu Nacional, thrown aloft by the inferno.

(…)

Editor's Note: This story was updated on September 6, 2018, with new details about which artifacts survived the fire. 

Taken from: https://www.nationalgeographic.com/science/2018/09/news-museu-nacional-fire-rio-de-janeiro-natural-history/. Access: 11 dez. 2018.

Todos os seres vivos são formados por células, com exceção dos vírus, sendo conhecidos desde formas unicelulares até formas pluricelulares. Os organismos unicelulares e pluricelulares têm a célula como unidade estrutural e funcional. Na classificação dos seres vivos, são utilizados critérios de organização e fisiologia celular para diferenciar os diversos grupos ou reinos. Quanto à organização celular, as células podem ser de dois tipos, procariótica e eucariótica. Um desses tipos manifesta-se apenas nos organismos do reino Monera.

(http://goo.gl/jUnx5. Acesso: 03/10/2012. Adaptado.)

Nos organismos desse reino, todas as células são

Um homem é filho de pai com visão normal e mãe daltônica.

Os genótipos do homem, da sua avó e do seu avô maternos são, respectivamente

Com o avanço da medicina e o aumento da expectativa de vida, os médicos intensificam os alertas sobre a importância de se prevenirem em tempo as doenças que costumam se tornar freqüentes no período senil. Uma das mais comuns, é a perda de massa óssea. As mulheres são mais acometidas pela doença do que os homens, principalmente na menopausa.

(Revista Ecologia e desenvolvimento, ano11, nº 95, 2001. Adaptado).

O fator que está mais intimamente relacionado com a menopausa e que provoca a perda de massa óssea é

“Ao longo do crescimento econômico, a humanidade fez uso, sobretudo de fontes de energia não renováveis. Os avanços nos processos tecnológicos industriais ocorreram, inicialmente, em países como a Inglaterra, onde a fonte de matéria-prima abundante para produção de energia era o ____________________. Foi esse combustível que moveu as primeiras máquinas a vapor e deu impulso à Revolução Industrial. Já no século XX, houve uma intensificação do uso do ___________________, sobretudo pelo fato de esse ser mais fácil de armazenar, transportar e usar. Seu potencial poluidor, no entanto, é também elevado.”

(CEMIG – Energia Eficiente Cidadania Inteligente – Bhte – 2005, p. 27-8. Adaptado).

Os combustíveis que completam, corretamente, essas lacunas são:

Michel está passeando de bicicleta pela pista de ciclistas, a uma velocidade de 5 m/s, quando um pequeno cachorrinho escapa da coleira e atravessa de súbito a pista, 3 m à frente da bicicleta. Michel, impossibilitado de se desviar da sua trajetória, freia e para, quase tocando no cachorro, em um curto espaço de tempo de 1,2 s.

A desaceleração, em m/s2, que Michel conseguiu imprimir à bicicleta, ao longo desses 3 m, foi de

A figura mostra uma onda periódica propagando-se no meio 1, com velocidade de módulo igual a 270 cm/s; passa para o meio 2, e a distância entre duas frentes de onda sucessivas diminui de 45cm para 30cm.

Com relação a esse fenômeno, é correto afirmar