Física
CinemáticaUFT · 2019MédioEntre para guardar nos favoritos
III. A constante elástica da corda é menor que 40N/m .
IV. No ponto mais baixo atingido pela pessoa a força peso é igual à força elástica da corda.
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Relacione corretamente os pensadores apresentados a seguir com seus respectivos pensamentos ou atributos, numerando a Coluna II de acordo com a Coluna I.


Fonte: https://www.open.edu/openlearn/science-mathstechnology/migration/content-section-3.3 (adaptado)
A figura acima mostra a distribuição da frequência observada de sucessos de acasalamento (linha contínua) de machos jovens de uma espécie de pássaro na qual a plumagem varia quanto ao padrão de coloração (mais ou menos brilhante). A linha tracejada representa os valores esperados para uma distribuição de frequência normal. Nessa espécie, fêmeas apresentam, em geral, plumagem menos colorida e menos brilhante, cabendo a elas a escolha do parceiro sexual.
Assim, analise as seguintes afirmativas.
I. O padrão observado de distribuição de frequências de acasalamento indica que está ocorrendo seleção estabilizadora.
II. Em longo prazo, a seleção exemplificada poderá levar à formação de novas espécies.
III. Machos com plumagem de brilho intermediário deverão deixar maior número de descendentes do que machos mais brilhantes.
IV. O exemplo é um tipo especial de seleção que atua em relação ao sexo e à reprodução.
Com base nas afirmativas, assinale a alternativa CORRETA.


do
período de oscilação. Uma extremidade da corda é presa ao
bloco, sem prejudicar o movimento do sistema, enquanto a outra
é fixada em um anteparo. Devido ao movimento do bloco, uma
onda com velocidade de propagação v e comprimento de onda λ se forma na corda.


Fonte: ROSS, Jurandyr L. S. (org.) Geografia do Brasil. São Paulo: Edusp, 2003. (adaptado)
Os mapas apresentam ocorrências de domínios morfoclimáticos brasileiros.
É CORRETO afirmar que o domínio morfoclimático representando no mapa possui as seguintes características:
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America’s social-media addiction is getting worse

(Sources: Pew Research Centre; e Marketer)
A survey in January and February 2019 from the Pew Research Centre, a think tank, found that 69% of American adults use Facebook; of these users, more than half visit the site “several times a day”. YouTube is even more popular, with 73% of adults saying they watch videos on the platform. For those aged 18 to 24, the figure is 90%. Instagram, a photo-sharing app, is used by 37% of adults. When Pew first conducted the survey in 2012, only a slim majority of Americans used Facebook. Fewer than one in ten had an Instagram account.
Americans are also spending more time than ever on social-media sites like Facebook. There is evidence that limiting such services might yield health benefits. A paper published last year by Melissa Hunt, Rachel Marx, Courtney Lipson and Jordyn Young, all of the University of Pennsylvania, found that limiting social-media usage to 10 minutes a day led to reductions in loneliness, depression, anxiety and fear. Another paper from 2014 identified a link between heavy social-media usage and depression, largely due to a “social comparison” phenomenon, whereby users compare themselves to others and come away with lower evaluations of themselves.
(www.economist.com, 08.08.2019. Adaptado.)
Leia o texto para responder à questão.
America’s social-media addiction is getting worse

(Sources: Pew Research Centre; e Marketer)
A survey in January and February 2019 from the Pew Research Centre, a think tank, found that 69% of American adults use Facebook; of these users, more than half visit the site “several times a day”. YouTube is even more popular, with 73% of adults saying they watch videos on the platform. For those aged 18 to 24, the figure is 90%. Instagram, a photo-sharing app, is used by 37% of adults. When Pew first conducted the survey in 2012, only a slim majority of Americans used Facebook. Fewer than one in ten had an Instagram account.
Americans are also spending more time than ever on social-media sites like Facebook. There is evidence that limiting such services might yield health benefits. A paper published last year by Melissa Hunt, Rachel Marx, Courtney Lipson and Jordyn Young, all of the University of Pennsylvania, found that limiting social-media usage to 10 minutes a day led to reductions in loneliness, depression, anxiety and fear. Another paper from 2014 identified a link between heavy social-media usage and depression, largely due to a “social comparison” phenomenon, whereby users compare themselves to others and come away with lower evaluations of themselves.
(www.economist.com, 08.08.2019. Adaptado.)
Leia o texto para responder à questão.
America’s social-media addiction is getting worse

(Sources: Pew Research Centre; e Marketer)
A survey in January and February 2019 from the Pew Research Centre, a think tank, found that 69% of American adults use Facebook; of these users, more than half visit the site “several times a day”. YouTube is even more popular, with 73% of adults saying they watch videos on the platform. For those aged 18 to 24, the figure is 90%. Instagram, a photo-sharing app, is used by 37% of adults. When Pew first conducted the survey in 2012, only a slim majority of Americans used Facebook. Fewer than one in ten had an Instagram account.
Americans are also spending more time than ever on social-media sites like Facebook. There is evidence that limiting such services might yield health benefits. A paper published last year by Melissa Hunt, Rachel Marx, Courtney Lipson and Jordyn Young, all of the University of Pennsylvania, found that limiting social-media usage to 10 minutes a day led to reductions in loneliness, depression, anxiety and fear. Another paper from 2014 identified a link between heavy social-media usage and depression, largely due to a “social comparison” phenomenon, whereby users compare themselves to others and come away with lower evaluations of themselves.
(www.economist.com, 08.08.2019. Adaptado.)
Leia o texto para responder à questão.
America’s social-media addiction is getting worse

(Sources: Pew Research Centre; e Marketer)
A survey in January and February 2019 from the Pew Research Centre, a think tank, found that 69% of American adults use Facebook; of these users, more than half visit the site “several times a day”. YouTube is even more popular, with 73% of adults saying they watch videos on the platform. For those aged 18 to 24, the figure is 90%. Instagram, a photo-sharing app, is used by 37% of adults. When Pew first conducted the survey in 2012, only a slim majority of Americans used Facebook. Fewer than one in ten had an Instagram account.
Americans are also spending more time than ever on social-media sites like Facebook. There is evidence that limiting such services might yield health benefits. A paper published last year by Melissa Hunt, Rachel Marx, Courtney Lipson and Jordyn Young, all of the University of Pennsylvania, found that limiting social-media usage to 10 minutes a day led to reductions in loneliness, depression, anxiety and fear. Another paper from 2014 identified a link between heavy social-media usage and depression, largely due to a “social comparison” phenomenon, whereby users compare themselves to others and come away with lower evaluations of themselves.
(www.economist.com, 08.08.2019. Adaptado.)
Leia o texto para responder à questão.
America’s social-media addiction is getting worse

(Sources: Pew Research Centre; e Marketer)
A survey in January and February 2019 from the Pew Research Centre, a think tank, found that 69% of American adults use Facebook; of these users, more than half visit the site “several times a day”. YouTube is even more popular, with 73% of adults saying they watch videos on the platform. For those aged 18 to 24, the figure is 90%. Instagram, a photo-sharing app, is used by 37% of adults. When Pew first conducted the survey in 2012, only a slim majority of Americans used Facebook. Fewer than one in ten had an Instagram account.
Americans are also spending more time than ever on social-media sites like Facebook. There is evidence that limiting such services might yield health benefits. A paper published last year by Melissa Hunt, Rachel Marx, Courtney Lipson and Jordyn Young, all of the University of Pennsylvania, found that limiting social-media usage to 10 minutes a day led to reductions in loneliness, depression, anxiety and fear. Another paper from 2014 identified a link between heavy social-media usage and depression, largely due to a “social comparison” phenomenon, whereby users compare themselves to others and come away with lower evaluations of themselves.
(www.economist.com, 08.08.2019. Adaptado.)
Leia o texto para responder à questão.
America’s social-media addiction is getting worse

(Sources: Pew Research Centre; e Marketer)
A survey in January and February 2019 from the Pew Research Centre, a think tank, found that 69% of American adults use Facebook; of these users, more than half visit the site “several times a day”. YouTube is even more popular, with 73% of adults saying they watch videos on the platform. For those aged 18 to 24, the figure is 90%. Instagram, a photo-sharing app, is used by 37% of adults. When Pew first conducted the survey in 2012, only a slim majority of Americans used Facebook. Fewer than one in ten had an Instagram account.
Americans are also spending more time than ever on social-media sites like Facebook. There is evidence that limiting such services might yield health benefits. A paper published last year by Melissa Hunt, Rachel Marx, Courtney Lipson and Jordyn Young, all of the University of Pennsylvania, found that limiting social-media usage to 10 minutes a day led to reductions in loneliness, depression, anxiety and fear. Another paper from 2014 identified a link between heavy social-media usage and depression, largely due to a “social comparison” phenomenon, whereby users compare themselves to others and come away with lower evaluations of themselves.
(www.economist.com, 08.08.2019. Adaptado.)
Leia o texto para responder à questão.
America’s social-media addiction is getting worse

(Sources: Pew Research Centre; e Marketer)
A survey in January and February 2019 from the Pew Research Centre, a think tank, found that 69% of American adults use Facebook; of these users, more than half visit the site “several times a day”. YouTube is even more popular, with 73% of adults saying they watch videos on the platform. For those aged 18 to 24, the figure is 90%. Instagram, a photo-sharing app, is used by 37% of adults. When Pew first conducted the survey in 2012, only a slim majority of Americans used Facebook. Fewer than one in ten had an Instagram account.
Americans are also spending more time than ever on social-media sites like Facebook. There is evidence that limiting such services might yield health benefits. A paper published last year by Melissa Hunt, Rachel Marx, Courtney Lipson and Jordyn Young, all of the University of Pennsylvania, found that limiting social-media usage to 10 minutes a day led to reductions in loneliness, depression, anxiety and fear. Another paper from 2014 identified a link between heavy social-media usage and depression, largely due to a “social comparison” phenomenon, whereby users compare themselves to others and come away with lower evaluations of themselves.
(www.economist.com, 08.08.2019. Adaptado.)
Leia o texto para responder à questão.
America’s social-media addiction is getting worse

(Sources: Pew Research Centre; e Marketer)
A survey in January and February 2019 from the Pew Research Centre, a think tank, found that 69% of American adults use Facebook; of these users, more than half visit the site “several times a day”. YouTube is even more popular, with 73% of adults saying they watch videos on the platform. For those aged 18 to 24, the figure is 90%. Instagram, a photo-sharing app, is used by 37% of adults. When Pew first conducted the survey in 2012, only a slim majority of Americans used Facebook. Fewer than one in ten had an Instagram account.
Americans are also spending more time than ever on social-media sites like Facebook. There is evidence that limiting such services might yield health benefits. A paper published last year by Melissa Hunt, Rachel Marx, Courtney Lipson and Jordyn Young, all of the University of Pennsylvania, found that limiting social-media usage to 10 minutes a day led to reductions in loneliness, depression, anxiety and fear. Another paper from 2014 identified a link between heavy social-media usage and depression, largely due to a “social comparison” phenomenon, whereby users compare themselves to others and come away with lower evaluations of themselves.
(www.economist.com, 08.08.2019. Adaptado.)
Examine o quadrinho de Peter Steiner para responder à questão.

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