Analise a figura abaixo.

Duas pilhas, de resistência interna !$ r_1 = r_2 !$ !$ = 1/3 Ω !$, e uma lâmpada, de resistência !$ R_L = 2/3 Ω !$, estão conectadas em paralelo como mostra o circuito da figura acima. A fem da pilha 1 é !$ ε_1 = 1,5 V !$, mas a pilha 2, de fem !$ ε_2 !$, encontra-se parcialmente descarregada de modo que o amperímetro ideal mede uma corrente nula nessa pilha. Sendo assim, o valor da fem !$ ε_2 !$, em volts, vale

As lhe Olympics Approaches, a Lesson in Overcoming Adversity

8ert R. Mandelbaum, MD
Ju[y 20, 2016

I've known a lot 01 athletes who qualilied lor the Olympic Games injuries. But I know 01 only one who qualified beca use of an injury.

Cliff Meidl's story captures the spirit 01 the Olympics.

In November 1986, Cliff, a 20-year-old plumber's apprentice, hit three buried high-voltage electrical cables with a jackhammer. An estimated 30,000 volts surged through his body, exploding bone and cartilage lrom the inside ali the way up to his head. To put that into perspective, electric chairs use only 1500-2000 volts for executions. So it's sale to say that Cliff should have died.

And he nearly did. His heart stopped. Paramedics were able to get it going again, but they had to resuscitate him on the way to the hospital.

As part of a team with renowned plastic surgeon Malcolm Lesavoy, MD, and others, I got to work reconstructing Cliffs legs. Our best hope was to avoid amputation.

But very quickly, we noticed something else going on - something that had nothing to do with our expertise. Through every step of his painlul rehabilitation, Cliff grew more and more determined. He never complained. He just asked, 'What's next?"

Belore he had even linished the rehabilitation, Cliff started paddling various watercralts. The days spent on crutches had already strengthened his upper body, and he took naturally to the sport. The same year in which he was injured, he began competing in canoe and kayak events, and in 1996 he qualilied lor the Olympics - not the Paralympic Games, the Olympic Games.

Four years later, in Sydney, Australia, I was overseeing the sports medicine team at the Olympic soccer tournament. I was sitting in the stands during the opening ceremonies when Cliff walked into the Olympic Stadium carrying the Stars and Stripes.

It's a long-standing tradition lor delegations of athletes to select one among their number to bear the Ilag, and the choice olten symbolizes some extraordinary accomplishment. I had no idea that Cliff would be selected. So when he strode into the stadium with a normal gait, I nearly broke down.

Moments like that reinlorce what I have always believed: that sport can bring out the best in us alI.

The Olympic Games (...) are devoted to celebrating the human capacity to improve body, mind, and sou I.

They are about taking part - not necessarily about winning. Cliffs peers in the US delegation of 2000 recognized that when they elected him to bear the nation's colors. He never won a medal at the games, but the spirit with which he overcame adversity inspired ali of them.

The Olympic moUo - laster, higher, stronger - can help our patients realize that the real victory is the "win within." The Win Within: Capturing Your Victorious Spirit is the name of the book I wrote to show people that coming back Irom adversity is part of our heritage - that we as human beings are more adapted to adversity than we are to success.

Adversity is the engine of unimagined opportunity. It can unleash our energy and stimulate our will. It moves us to succeed. If I don't have lood, I have to go get some. If I'm cold, I have to build a shelter.

I remind patients who don't participate in sports that they have the heritage of athletes. We ali have the genes of pursuit-hunters who survived by running down their prey and running away Irom their predators. That's why even now, in 2016, when we go out and take a run, we leel good. We get an endorphin surge and our lipids go down. Our hearts and brains become clear.

The life of sport and sport of life are interlinked. Exercise is our birthright; it's our legacy; it's why we are here.

We no longer have to lear saber-toothed tigers or cave bears. But when you look today at how people can be successful in 2016, it's by avoiding the predators in our urban life: overeating, inactivity, and smoking. And it's by rising to meet adversity.

(Adapted trom http://WNIN.medscape.comlviewarticle/866279)

Considering the text, the words "nearly" (4th and 9th paragraphs) and "overseeing" (8th paragraph) mean, respectively, " " and " "

Mark lhe correct option.

Too many third graders can't read this sentence
9 Feb. 2017 - Editor's Picks

Two-thirds of U.S. third graders face challenges that will impact their future, including academic struggles that could lead to dimmer academic and career prospects. Sadly, only .one in three U.S. students demonstrates reading proficiency at the end of third grade. This has alarming consequences for these children, and for our country.

A report released today from the Business Roundtable (BRT) sheds light on this troubling trend in American education, and advises business leaders on how they can help put more children on a path to success.

(...)

I've heard it said that before third grade, students are learning to read, while after third grade, they're reading to learn. Grade three is a criticai crossroads in a life's journey. If you've read this far, then you understand why this is so important. Not enough of our young learners can say the same.

I encourage you to read the BRT reporto As you read, please consider ways to help our schools and our teachers keep students on paths to bright futures.

Leave your comments below

Michel Jonas

Really, all I read was blabla wa wa wa. Are you Charlie Brown's teacher? If we can't understand our children who are crying out for help and direction, then there is something wrong with you. Please go back and check yourself! They are worth so much more.

Rick Shire

Thanks for sharing. With two young children, I increasingly think about the importance of early childhood education. Pre-k care is far too inaccessible, ultimately magnifying inequality from the earliest stages of life.

Tom Franks

What exactly is education? Academic education doesn't make someone a betler person or even a betler employee. I would guess that anything we learn in the education process is at the most 10% useful to us as people. Education should teach academia but also life skills such as budgeting, EQ skills, languages etc., all the elements to be a successful person and not necessarily a successful professional.

(Adapted Irom https ://w.vw.linkedin.com)

Decide if the statements below are true (T) or false (F) according to the texto Then choose the option that contains the correct sequence.

( ) Most kids in American schools cannot read well enough at third grade.

( ) The BRT report does not incJude suggestions on how to improve education.

( ) Michel Jonas posted a positive comment about the matler.

( ) Tom Franks believes schools do not prepare us for life.

Sejam f e g funções reais dadas por !$ f(x) = { \large 1 \over 1 - cos (x) + sen (x)} !$ e !$ g(x) = { \large 1 + tg(x) \over 1 - tg(x)} !$. Calcule o valor da integral !$ \int\limits_{a}^{b} !$ !$ f(x) dx !$, em que !$ a = { \large P \over 4} !$, !$ b = { \large P \over 2} !$, e !$ P !$ é o período da função !$ g !$ marque a opção correta.

Sejam g e f funções reais, determine a área da região limitada pelo eixo y, por !$ g(x) = - |x - 3| + 4 !$ e pela assíntota de !$ f(x) = \sqrt[3] {x^3 - x^2} !$ e assinale a opção correta.

Which is the correct way to complete the paragraph below?

A change of habits

In recent years, dairy milk alternatives made from almonds, soy, cashews and coconuts in popularity. Many people consider them more nutritious than cow's milk. Some people them beca use they have a milk allergy or lactose intolerance. Others choose them for environmental reasons or because they want a vegan diet. Some just like the taste. Cow's milk once one of America's most iconic beverages. But now Americans less of it.

(Adapted from https :1IW'vV'N.nytimes.com)

Um motorista faz uma viagem da cidade A até a cidade B. O primeiro um terço do percurso da viagem ele executa com uma velocidade média de 50km/h. Em um segundo trecho, equivalente à metade do percurso, ele executa com uma velocidade média de 75km/h e o restante do percurso faz com velocidade média de 25km/h. Se a velocidade média do percurso todo foi de 60km/h, é correto afirmar que, se a distância entre as cidades A e B é de

Analise a figura abaixo.

Na figura acima, tem-se a representação de um tubo em "U" que contém dois líquidos imiscíveis, 1 e 2. A densidade do liquido menos denso é d. A figura também exibe duas esferas maciças, A e B, de mesmo volume, que estão ligadas por um fio ideal tensionado. A esfera A está totalmente imersa no Iíquido 1 e a esfera B tem 3/4 de seu volume imerso no líquido 2. Sabendo que as esferas estão em equilíbrio estático e que a esfera A tem densidade 2d/3, qual a densidade da esfera B?