Uma mistura de gases hipotéticos A2 e B2 pode reagir na presença de luz. Sabendo-se que a energia mínima do fóton para iniciar a reação entre os gases é de 2,3 eV, assinale a alternativa que apresenta o tipo de laser de menor energia que possibilita a ocorrência da reação.
Dados eventualmente necessários: violeta = 405 × 10-9m, verde = 532 × 10-9m e Avermelha = 650 × 10-9 m. A ( ) Ultravioleta. C ( ) Verde. E ( ) Infravermelho. :selected: :selected: :selected: B ( ) Violeta. D ( ) Vermelho.
14
INGLÊS
Leia o texto a seguir para responder às questões de 37 a 39.
"In recent years, no more than a week goes by without news of a cosmic discovery worthy of banner headlines. While media gatekeepers may have developed an interest ∈ the universe, this rise ∈ coverage likely comes from a genuine increase ∈ the public's appetite for science. Evidence for this abounds, from hit television shows inspired or informed by science, to the success of science fiction films starring marquee actors, and brought to the screens by celebrated producers and directors. And lately, theatrical release biopics featuring important scientists have become a genre unto itself. There's also widespread interest around the world ∈ science festivals, science fiction conventions, and documentaries for television.
The highest grossing film of all time is by a famous director who set his story on a planet orbiting a distant ⋆. And it features a famous actress who plays an astrobiologist. While most branches of science have ascended ∈ this era, the field of astrophysics persistently rises to the top. I think I know why. At one time or another every one of us has looked up at night sky and wondered: What does it all mean? How does it all work? And, what is my place ∈ the universe? [ ... ]"
Fonte: TYSON, Neil DeGrasse. Astrophysics for people ∈a hurry. United States of America: W. W. Norton & Company, Inc., 2017.
