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Na questão de Física, quando necessário, use:
• massa atômica do hidrogênio: mH = 1,67⋅10 –27 kg
• massa atômica do hélio: mHe = 6,65 ⋅10 –27 kg
• velocidade da luz no vácuo: c = 3 ⋅10 8 m/s
• constante de Planck: h = 6 ⋅10 –34 J⋅s
• 1 eV = 1,6 ⋅10 –19 J
• constante eletrostática do vácuo: k0 = 9,0 ⋅10 9 N⋅m 2 / C2
• aceleração da gravidade: g = 10 m/s2
• cos 30º = sen 60º = √3/2
• cos 60º = sen 30º = 1/2
• cos 45º = sen 45º = √2/2
Duas partículas idênticas, A e B, se movimentam ao longo de uma mesma trajetória x, sendo suas posições, em função do tempo, dadas por xA = 2t e xB = 4 + t, respectivamente, com x em metros e t em segundos. Em determinado instante, as partículas, que formam um sistema isolado, sofrem uma colisão parcialmente elástica, com coeficiente de restituição e = 0,5.
Nessas condições e desprezando o deslocamento dessas partículas durante a colisão, quando a partícula A estiver na posição 28 m, a partícula B estará na posição, em m,
Na questão de Física, quando necessário, use:
• massa atômica do hidrogênio: mH = 1,67⋅10 –27 kg
• massa atômica do hélio: mHe = 6,65 ⋅10 –27 kg
• velocidade da luz no vácuo: c = 3 ⋅10 8 m/s
• constante de Planck: h = 6 ⋅10 –34 J⋅s
• 1 eV = 1,6 ⋅10 –19 J
• constante eletrostática do vácuo: k0 = 9,0 ⋅10 9 N⋅m 2 / C2
• aceleração da gravidade: g = 10 m/s2
• cos 30º = sen 60º = √3/2
• cos 60º = sen 30º = 1/2
• cos 45º = sen 45º = √2/2
A partir do instante t0 = 0, uma partícula com velocidade inicial v0 é uniformemente acelerada.
No instante t, a aceleração cessa e a partícula passa a se movimentar com velocidade constante v. Do instante 2t ao instante 4t, uma nova aceleração constante atua sobre a partícula, de tal forma que, ao final desse intervalo, sua velocidade vale -v.
Nessas condições, a velocidade média da partícula, no intervalo de 0 a 4t, é igual a
A área do triângulo ABC, dado na figura, é:
, determine
f(g(x)). Considere o complexo 
. O valor de z1983 é:
Sejam as funções 
. Determine
o valor de x para que y1 = y2.
Choose the right alternative to complete the gap:
Mr. Thompson’s secretary was ill yesterday, so he had to type the document ________.
Complete the sentences with the right demonstrative pronoun:
Who is ________ officer over there?
Read the following statements and choose the correct alternative.
I - Let’s go for a walk, shall we?
II - Don’t be late, do you?
III - You haven’t got a ruler, have you?
IV - Margaret plays the piano, don’t she?
Read this notice about an apartment for rent and answer the question below.
“Students! Are you looking for a special place to live? Come to 140 Grant Street, Apt. 4B. This apartament is absolutely perfect for two serious students who are looking for a quiet neighborhood, just 15 minutes from campus.”
The expression “looking for” in bold type in the paragraph above is closest in meaning to _________________.
Brazilian airforce airlifted 4 Polish citizens from the
coronavirus-stricken Chinese city Wuhan
The President of Brazil, Jair Bolsonaro, has aided Poland by helping to evacuate 4 Polish citizens from the Coronavirusstricken Chinese city Wuhan. A Brazilian air force plane landed in Warsaw to drop the 4 Poles off, after which it continued its journey from Wuhan to Brazil. A total of 34 Brazilians were quarantined for 18 days after returning back home.
https://polanddaily.com/959-brazilian-airforce-airlifted-4-polish-citizens-from-the-coronavirus-stricken-chinese-city-wuhan
Brazilian airforce airlifted 4 Polish citizens from the
coronavirus-stricken Chinese city Wuhan
The President of Brazil, Jair Bolsonaro, has aided Poland by helping to evacuate 4 Polish citizens from the Coronavirusstricken Chinese city Wuhan. A Brazilian air force plane landed in Warsaw to drop the 4 Poles off, after which it continued its journey from Wuhan to Brazil. A total of 34 Brazilians were quarantined for 18 days after returning back home.
https://polanddaily.com/959-brazilian-airforce-airlifted-4-polish-citizens-from-the-coronavirus-stricken-chinese-city-wuhan
Brazilian airforce airlifted 4 Polish citizens from the
coronavirus-stricken Chinese city Wuhan
The President of Brazil, Jair Bolsonaro, has aided Poland by helping to evacuate 4 Polish citizens from the Coronavirusstricken Chinese city Wuhan. A Brazilian air force plane landed in Warsaw to drop the 4 Poles off, after which it continued its journey from Wuhan to Brazil. A total of 34 Brazilians were quarantined for 18 days after returning back home.
https://polanddaily.com/959-brazilian-airforce-airlifted-4-polish-citizens-from-the-coronavirus-stricken-chinese-city-wuhan
Anne With an E fans wage digital war with Netflix over cancellation
Anne Shirley, the outspoken orphan who first appeared in Lucy Maud Montgomery’s 1908 novel, Anne of Green Gables, has since appeared in countless movies and television spinoffs – and built a loyal global following. So it should probably come as little surprise that fans of the show’s latest remake – the TV series Anne With an E – are fiercely protective of their heroine. And like Anne, they’re willing to fight for what they believe in.
The shows coproducers, Netflix and CBC, announced that the drama would be cancelled after three seasons. “People were outraged. The cast and the crew were also blindsided by it,” said Lisa E, a Toronto-based organizer with AWAE Fan Projects. “Everyone loves the show obviously. They just couldn’t believe it.” The day after the announcement, a group of fans took to Twitter with rallying cry: renew the show. The group’s most successful – and most controversial – campaign has been a digital, guerilla-style battle against the two companies.
Adapted from https://www.theguardian.com/world/2020/apr/22/anne-with-an-e-show-cancelled-angry-fans
Anne With an E fans wage digital war with Netflix over cancellation
Anne Shirley, the outspoken orphan who first appeared in Lucy Maud Montgomery’s 1908 novel, Anne of Green Gables, has since appeared in countless movies and television spinoffs – and built a loyal global following. So it should probably come as little surprise that fans of the show’s latest remake – the TV series Anne With an E – are fiercely protective of their heroine. And like Anne, they’re willing to fight for what they believe in.
The shows coproducers, Netflix and CBC, announced that the drama would be cancelled after three seasons. “People were outraged. The cast and the crew were also blindsided by it,” said Lisa E, a Toronto-based organizer with AWAE Fan Projects. “Everyone loves the show obviously. They just couldn’t believe it.” The day after the announcement, a group of fans took to Twitter with rallying cry: renew the show. The group’s most successful – and most controversial – campaign has been a digital, guerilla-style battle against the two companies.
Adapted from https://www.theguardian.com/world/2020/apr/22/anne-with-an-e-show-cancelled-angry-fans
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