O filamento das lâmpadas A e B representadas na figura abaixo, são feitos do mesmo material e tem o mesmo comprimento. O fio da lâmpada A é mais espesso que da lâmpada B. Neste caso, ao ligar cada lâmpada a uma bateria de 20 V, podemos afirmar que pela lâmpada B passará uma corrente

Um avião de brinquedo voa com uma velocidade de módulo igual a 16 km/h, numa região com ventos de velocidade de módulo 5 km/h. As direções da velocidade do avião e da velocidade do vento formam entre si um ângulo de 60º, conforme figura abaixo. Determine o módulo da velocidade resultante, em km/h, do avião nesta região.

O valor de a para que os pontos A (-1, 3-a), B (3, a+1) e C (0, -1) sejam colineares é um número real

Assinale a alternativa em que a oração apresenta sujeito indeterminado.

What could have prompted Lubitz to deliberately destroy the aircraft, killing everyone on board, remained the focus of investigations in Germany.

Officials said Lubitz was not known to be on any terrorism list, and his religion was not immediately known.

He had passed medical and psychological testing when he was hired in 2013, said Carsten Spohr, CEO of Lufthansa, which owns Germanwings.

While the ailment Lubitz had sought treatment for hasn’t been revealed, that he was declared unfit for work is an important detail, aviation analysts say. Pilots are required to maintain their fitness to fly and must tell their airline if they’re found unfit, CNN aviation analyst David Soucie said.

Adapted from http://edition.cnn.com/2015/03/27/europe/francegermanwings- plane-crash-main/

In the sentence “Pilots (…) must tell their airline if they’re found unfit.”, the expression in bold can be replaced by:

Marque a opção que apresenta corretamente exemplo de concordância verbal.

O lado, o perímetro e a área de um triângulo equilátero, nesta ordem, são termos de uma Progressão Geométrica. Assim, a medida da altura desse triângulo equilátero é unidades de comprimento.

Lufthansa Now Says It Knew of Co-Pilot Andreas
Lubitz’s History of Depression

The co-pilot at the controls of the German jetliner that crashed last week had informed Lufthansa in 2009 about his depressive episodes, the company said Tuesday.

In a statement, Lufthansa said the co-pilot had conveyed the information when he sought to rejoin the airline’s flight school after a monthslong pause in his studies.

French prosecutors said that Mr. Lubitz appeared to have intentionally crashed the jet into the French Alps on March 24. The plane descended a little under 10 minutes before it struck the earth, killing all 150 people aboard.

Prosecutors in Germany said Monday that he had been treated for suicidal tendencies.

(Adapted from www.nytimes.com)

GLOSSARY
conveyed – transmitiu
sought – procurou
monthslong – com duração de meses
prosecutors - promotores

According to the text,

No ciclo trigonométrico os valores de x, tais que cos !$ x \le { \large 1 \over 2} !$, são

Sister Cities

Vancouver is a city located in Canada. It became a city in 1886. Its population is over 560,000 people. During the summer, temperatures are up to 18ºC. Its sister city, Yokohama, is located in Japan. It became a city in 1889. Temperatures during the summer may get to 24ºC. It has 3,500,000 people.

According to the text,