Foram encontradas 40 questões.
Um aquecedor elétrico é construído com 4 resistores ôhmicos de mesmo valor de resistência elétrica cada um. Os fios de ligação e o gerador são ideais. A potência elétrica total original tem valor Pot e o circuito elétrico é o indicado na figura.
Um pedaço de fio, ideal, é soldado ao circuito, nos pontos indicados pelos números 2 e 3. Promovida essa alteração, a nova potência elétrica total dissipada pelo aquecedor passa a ser
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O índice de refração relativo nA,B entre dois meios, A e B, é 0,5. Sabendo que o índice de refração absoluto do meio A vale 2, o índice absoluto do meio B tem valor igual a
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No painel dos carros a combustão interna, uma lâmpada de advertência se acende quando a temperatura do líquido de arrefecimento do motor chega a 115 ºC. Esse líquido é uma mistura que tem calor específico igual a 0,6 cal/(g × ºC) e sua densidade pode ser igualada à da água, que é de 1 000 g/L. Considere um veículo que usa 10 L de líquido de arrefecimento para manter a temperatura do motor controlada. Em uma eventual falha no processo de resfriamento desse líquido, a menor quantidade de calor acumulada para que, a partir da temperatura de 15 ºC, a luz de advertência se acenda é de
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Um corpo dotado de rodinhas ideais, inicialmente em repouso, e apoiado sobre uma superfície plana, horizontal e livre de atritos, passa a receber a ação de uma força resultante horizontal, de direção, sentido e intensidade constantes. O esboço do gráfico que corresponde à variação da energia cinética desse corpo em função do tempo é:
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Uma sequência engraçada que já foi muitas vezes explorada em comédias e desenhos animados tem como cenário as estruturas em aço de edifícios. Nessa sequência, um personagem, sonâmbulo, caminha sobre uma viga da estrutura de um prédio. Quando o personagem está prestes a cair, uma outra viga, que está sendo erguida por um guindaste, nivela- -se com a primeira, possibilitando que o próximo passo não seja no vazio. O personagem passa, então, a caminhar sobre essa viga que está subindo e, novamente, quando tudo parece que vai dar errado, a viga em ascensão nivela-se com a outra viga do próximo andar, garantindo a continuidade da caminhada.
Admita que a viga em ascensão meça 30 m de comprimento, se mantenha sempre na horizontal e realize movimento uniforme; que a velocidade do sonâmbulo seja constante e de valor igual a 0,5 m/s; que a altura entre as vigas de um andar e do próximo seja de 3 m. Considerando a sequência de acontecimentos descritos, a velocidade com que a viga em ascensão se movimenta é de
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Read the comic strip by Jim Davis.
(www.gocomics.com)
The sentence in the third panel expresses the idea of
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France wants to put a lid on the tourist crowds that flood historic landmarks and natural treasures each year, though officials have said it would not be easy. Tourism Minister Olivia Gregoire unveiled a plan to regulate visitor flows at the most popular sites and lay out a strategy against overtourism. She said France, the world’s biggest tourist destination, particularly needed to better manage the peak-season influxes that threatened “the environment, the quality of life for locals, and the experiences for its visitors”. The issue is urgent for prime destinations worldwide as international travel surges after covid-19 lockdowns. Many of the most revered French sites, such as the Mont-Saint-Michel abbey in Normandy, say they are overwhelmed by the number of visitors.
On the famed Channel beach of Etretat, which saw a tourism surge thanks to the plot of the Netflix detective series “Lupin”, the 1,200 residents see up to 10,000 tourists a day in the high season. “This massive influx ends up eroding the cliffs and endangers the beach cliffs,” co-head of the Etretat Tomorrow residents’ association Shai Mallet said. She also laments the lack of local economic benefits, with visitors staying just a few hours, maybe grabbing an ice cream but not constantly frequenting restaurants or hotels.
The government’s announcement comes as Paris, which is dealing with a housing shortage in part because homeowners prefer short-term rentals to tourists, said last week it expects 37 million tourists this year, just short of the pre-pandemic level of 38.5 million in 2019. Limits are already being set, with officials limiting day visits to the gorgeous Brittany island of Brehat at 4,700 during the peak summer months.
(www.euronews.com, 20.06.2023. Adaptado.)
O trecho do segundo parágrafo “thanks to the plot of the Netflix detective series ‘Lupin’” expressa ideia de
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France wants to put a lid on the tourist crowds that flood historic landmarks and natural treasures each year, though officials have said it would not be easy. Tourism Minister Olivia Gregoire unveiled a plan to regulate visitor flows at the most popular sites and lay out a strategy against overtourism. She said France, the world’s biggest tourist destination, particularly needed to better manage the peak-season influxes that threatened “the environment, the quality of life for locals, and the experiences for its visitors”. The issue is urgent for prime destinations worldwide as international travel surges after covid-19 lockdowns. Many of the most revered French sites, such as the Mont-Saint-Michel abbey in Normandy, say they are overwhelmed by the number of visitors.
On the famed Channel beach of Etretat, which saw a tourism surge thanks to the plot of the Netflix detective series “Lupin”, the 1,200 residents see up to 10,000 tourists a day in the high season. “This massive influx ends up eroding the cliffs and endangers the beach cliffs,” co-head of the Etretat Tomorrow residents’ association Shai Mallet said. She also laments the lack of local economic benefits, with visitors staying just a few hours, maybe grabbing an ice cream but not constantly frequenting restaurants or hotels.
The government’s announcement comes as Paris, which is dealing with a housing shortage in part because homeowners prefer short-term rentals to tourists, said last week it expects 37 million tourists this year, just short of the pre-pandemic level of 38.5 million in 2019. Limits are already being set, with officials limiting day visits to the gorgeous Brittany island of Brehat at 4,700 during the peak summer months.
(www.euronews.com, 20.06.2023. Adaptado.)
No trecho do primeiro parágrafo “The issue is urgent for prime destinations worldwide as international travel surges after covid-19 lockdowns”, o termo sublinhado é empregado com o mesmo sentido em:
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Leia o texto para responder a questão.
France wants to put a lid on the tourist crowds that flood historic landmarks and natural treasures each year, though officials have said it would not be easy. Tourism Minister Olivia Gregoire unveiled a plan to regulate visitor flows at the most popular sites and lay out a strategy against overtourism. She said France, the world’s biggest tourist destination, particularly needed to better manage the peak-season influxes that threatened “the environment, the quality of life for locals, and the experiences for its visitors”. The issue is urgent for prime destinations worldwide as international travel surges after covid-19 lockdowns. Many of the most revered French sites, such as the Mont-Saint-Michel abbey in Normandy, say they are overwhelmed by the number of visitors.
On the famed Channel beach of Etretat, which saw a tourism surge thanks to the plot of the Netflix detective series “Lupin”, the 1,200 residents see up to 10,000 tourists a day in the high season. “This massive influx ends up eroding the cliffs and endangers the beach cliffs,” co-head of the Etretat Tomorrow residents’ association Shai Mallet said. She also laments the lack of local economic benefits, with visitors staying just a few hours, maybe grabbing an ice cream but not constantly frequenting restaurants or hotels.
The government’s announcement comes as Paris, which is dealing with a housing shortage in part because homeowners prefer short-term rentals to tourists, said last week it expects 37 million tourists this year, just short of the pre-pandemic level of 38.5 million in 2019. Limits are already being set, with officials limiting day visits to the gorgeous Brittany island of Brehat at 4,700 during the peak summer months.
(www.euronews.com, 20.06.2023. Adaptado.)
No trecho do primeiro parágrafo “though officials have said it would not be easy”, o termo sublinhado equivale, em português, a
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Leia o texto para responder a questão.
France wants to put a lid on the tourist crowds that flood historic landmarks and natural treasures each year, though officials have said it would not be easy. Tourism Minister Olivia Gregoire unveiled a plan to regulate visitor flows at the most popular sites and lay out a strategy against overtourism. She said France, the world’s biggest tourist destination, particularly needed to better manage the peak-season influxes that threatened “the environment, the quality of life for locals, and the experiences for its visitors”. The issue is urgent for prime destinations worldwide as international travel surges after covid-19 lockdowns. Many of the most revered French sites, such as the Mont-Saint-Michel abbey in Normandy, say they are overwhelmed by the number of visitors.
On the famed Channel beach of Etretat, which saw a tourism surge thanks to the plot of the Netflix detective series “Lupin”, the 1,200 residents see up to 10,000 tourists a day in the high season. “This massive influx ends up eroding the cliffs and endangers the beach cliffs,” co-head of the Etretat Tomorrow residents’ association Shai Mallet said. She also laments the lack of local economic benefits, with visitors staying just a few hours, maybe grabbing an ice cream but not constantly frequenting restaurants or hotels.
The government’s announcement comes as Paris, which is dealing with a housing shortage in part because homeowners prefer short-term rentals to tourists, said last week it expects 37 million tourists this year, just short of the pre-pandemic level of 38.5 million in 2019. Limits are already being set, with officials limiting day visits to the gorgeous Brittany island of Brehat at 4,700 during the peak summer months.
(www.euronews.com, 20.06.2023. Adaptado.)
The main purpose of the text is to
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