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Read the text and answer the questions 25, 26 and 27. Hawaii’ volcano Caleb Jones and Andrey Mac Aroy Kilawea began erupting more than two weeks ago. It has burned dozens of homes, forced people to escape ______ smoke and fire and led…
Read the text and answer the questions 25, 26 and 27. Hawaii’ volcano Caleb Jones and Andrey Mac Aroy Kilawea began erupting more than two weeks ago. It has burned dozens of homes, forced people to escape ______ smoke and fire and led…
Read the text and answer the questions 28 and 29. Drunk pilot removed from cockpit at Stuttgart Airport Josh Gerbbatiss A “highly intoxicated” pilot was removed from the cockpit of a flight, leaving more than 100 passengers unable to leave…
Read the text and answer the questions 30, 31 and 32. The mistake 1 A photographer named John was flying first class from London to Nairobi in Kenya when one of the pilots came out of the cockpit to make some coffee in the microwave. He…
Read the text and answer the questions 30, 31 and 32. The mistake 1 A photographer named John was flying first class from London to Nairobi in Kenya when one of the pilots came out of the cockpit to make some coffee in the microwave. He…
Read the text and answer the questions 33, 34, and 35. St Marteen: tourist killed by jet blast at caribean airport A tourist has been killed after being knocked over by jet blast at an airport famous for its dangerous runway. The woman was…
Read the text and answer the questions 33, 34, and 35. St Marteen: tourist killed by jet blast at caribean airport A tourist has been killed after being knocked over by jet blast at an airport famous for its dangerous runway. The woman was…
Read the text and answer the questions 33, 34, and 35. St Marteen: tourist killed by jet blast at caribean airport A tourist has been killed after being knocked over by jet blast at an airport famous for its dangerous runway. The woman was…
Read the text and answer the questions 36, 37, and 38. Cuba plane crash: 110 dead as investigators recover flight’black box The fiery crash of an ageing passenger jet close to Havana’s main airport killed 110 people while three survivors…
Read the text and answer the questions 36, 37, and 38. Cuba plane crash: 110 dead as investigators recover flight’black box The fiery crash of an ageing passenger jet close to Havana’s main airport killed 110 people while three survivors…
Read the text and answer the questions 39, 40 and 41. PRESSURE Jeremy Berke 1 Commercial airplane cabins are generally pressurized to an equivalent of 6,000 to 8,000 feet above sea level, in an effort to maintain a healthy oxygen level for…
Read the text and answer the questions 42, 43 and 44. Southwest Airlines Flight 1380 Jeremy Berke 1 Southwest Airlines Flight 1380 suffered an engine failure that smashed a plane window, sucking a passenger halfway out of the plane in…
Read the text and answer the questions 42, 43 and 44. Southwest Airlines Flight 1380 Jeremy Berke 1 Southwest Airlines Flight 1380 suffered an engine failure that smashed a plane window, sucking a passenger halfway out of the plane in…
Read the text and answer the questions 45, 46 and 47. Mrs. Pratchett 1 Her name was Mrs Pratchett. She was a small, skinny old hag with moustache on her upper lip and a mouth as sour as a green goosebery. She never smiled. Her apron was…
Read the text and answer the questions 45, 46 and 47. Mrs. Pratchett 1 Her name was Mrs Pratchett. She was a small, skinny old hag with moustache on her upper lip and a mouth as sour as a green goosebery. She never smiled. Her apron was…
Read the text and answer the questions 48. Routine We’re supposed to start work at nine, but I often come in later because I have to take my children to school first, but then I stay a little later. Of course, if I have an early meeting or…
Analisando a figura, pode-se afirmar corretamente que o valor de x é
A unidade de momento de uma força em relação a um ponto pode ser derivada a partir das unidades fundamentais do Sistema Internacional de Unidades (S.I.), como:
Uma bomba hidráulica, que apresenta potência útil de 4 HP, é utilizada para retirar água do fundo de um poço de 6 m de profundidade. Adotando o módulo da aceleração da gravidade local igual a 10 m/s 2 , 1 HP = 3/4 kW e densidade da água…
Um corpo, de massa igual a 6 kg, desloca-se sobre uma superfície horizontal, realizando movimento uniforme de acordo com a seguinte expressão S = 20t, onde S é a posição em metros e t é o tempo em segundos. De repente, esse corpo divide-se…
Os eclipses solares e lunares são fenômenos ópticos que sempre foram cobertos de fascínio e lendas. As sombras e as penumbras formadas devido ao alinhamento da Terra, Lua e Sol são comprovações de um dos Princípios da Óptica Geométrica.…
O circuito elétrico apresentado a seguir é formado por três resistores ôhmicos R 1 , R 2 e R 3 , de valores iguais, ligados em paralelo entre si e com uma fonte de alimentação ideal V, a qual fornece à associação uma diferença de potencial…
O gráfico a seguir representa a posição (x), em metros, em função do tempo (t), em segundos, de um ponto material. Entre as alternativas, aquela que melhor representa o gráfico velocidade média (v), em metros/segundo, em função do tempo…
O valor da intensidade do vetor campo elétrico gerado pela carga Q 1 em um ponto situado a uma distância “d” dessa carga é igual a E. Mantendo as mesmas condições, a intensidade da carga geradora e o meio, coloca-se nesse mesmo ponto uma…
Uma espira circular com 6,28 cm de diâmetro é percorrida por uma corrente elétrica de intensidade igual a 31,4 mA e, nessas condições, produz um vetor campo magnético no centro dessa espira com uma intensidade no valor de ______ ×10 –7 T.…