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Every map you look at is wrong

By Wil Jones in offbeat

Everyone knows what a map of the world looks like, right? It’s probably been burnt into your retinas since your school days.

The thing is, the image you think of what the world looks like is actually pretty wrong. How come? Well, as we’re sure you know, the Earth is spherical. That means it is impossible to produce an accurate flat image, showing the layout of countries as they really are. It’s a hard concept to get your head around with an actual globe in front of you.

[https://www.indy100.com/article/every-map-wrong-this-video-explains-why-7459106]. Acessado em 17/01/2017. Modificado para fins educacionais.

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Exposure to Blue and Ultraviolet Light, as in Sunlight, Could Boost Immunity

By Stav Ziv On 1/11/17

Researchers at Georgetown University Medical Center chose the start of yet another sun-starved winter to publish a study showing that exposure to blue light and ultraviolet light increases the movement of T cells, a key part of the immune system. Sunlight, therefore, could be an immune booster.

The researchers isolated T cells from human blood and mice and grew them in dishes in the laboratory. When they shined either UV or blue light on the cells, the cells became activated and moved more quickly. Although both UV and blue light increased the cells’ movement, focus was given to the potential benefits of blue light for two reasons: UV light is known to cause cancer, and it reaches only the outermost layer of skin, the epidermis. Blue light can reach deeper to the second layer, the dermis, where most of the skin’s T cells are located. If light could spur these immune cells to get to an infection more quickly, it could be leveraged via lamps to boost immunity and help treat skin diseases or even cancer.

Assinale a alternativa que corresponde à informação contida no texto.

[http://www.reuters.com/article/us-newzealand-passport-error-idUSKBN13W0RL]Acessado em 15/03/2017.

O candidato não conseguiu colocar a foto no passaporte porque

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O resto da divisão de um polinômio do segundo grau P pelo binômio (x + 1) é igual a 3. Dado que P(0) = 6 e P(1) = 5, o valor de P(3) é

A função modular !$ f(\text{x}) = | a\text{x} + b |, \ a \in \mathbb{R}^*, \ b \in \mathbb{R} !$ e a função quadrática g(x) = –0,5x² + 2x + 6 têm dois pontos em comum, conforme o gráfico.

Um desses pontos corresponde à menor raiz da função g e o outro ponto corresponde ao maior valor dessa função. O produto !$ ab !$ vale

Seja uma reta r e os planos secantes !$ \alpha !$ e !$ \beta !$, de modo que !$ \alpha \cap \beta = \text{r} !$. Seja s uma reta paralela à reta r, de modo que !$ \text{s} \cap \beta = \varnothing !$. Seja t uma reta secante ao plano !$ \beta !$ no ponto P, de modo que P !$ \in !$ r. De acordo com essas informações, necessariamente

No pentágono ABCDE da figura, o lado !$ \overline{AB} !$ mede 3 cm; o lado !$ \overline{AE} !$ mede 8 cm; o lado !$ \overline{CD} !$ mede 4 cm e os ângulos !$ B\hat{E}C !$, !$ \hat{A} !$ e !$ \hat{D} !$ medem 30º, 60º e 90º respectivamente.

Sendo a área do triângulo BCE igual a 10,5 cm², a medida, em cm, do lado !$ \overline{DE} !$ é

A reta f que passa pelo ponto A(0, 8) e a reta g que passa pelos pontos E(0, –4) e C(4, 0) são perpendiculares e interceptam-se no ponto B, conforme mostra a figura.

Sendo D(0, 0) a origem do sistema de coordenadas cartesianas, a área do polígono ABCD é