(UEFS) Duas esferas condutoras, isoladas e em equilíbrio eletrostático, tem Q₁ = 4,0μC e  Q₂ = - 2,0μC e raios  R₁= 4,0cm e R₂ = 5,0cm. Sabendo-se que as esferas são postas em contato através de um fio condutor, é correto afirmar que o potencial de equilíbrio, em 10⁵ V, é igual a

(UFG) Considere que a cor dos olhos seja determinada por um par de alelos em que o gene para a cor preta é dominante e para a cor azul, recessivo. Admitindo-se que, em uma comunidade de 5000 indivíduos, 450 tenham olhos azuis e que essa população esteja em equilíbrio de Hardy-Weinberg, o número de heterozigotos, nessa população, é de:

(UNICENTRO) A figura representa um circuito constituído por um gerador elétrico, receptores elétricos e um capacitor.

Nessas condições, é correto afirmar que a carga elétrica armazenada no capacitor, em μC, é igual a

(ESPCEX) We’re so well educated – but we’re useless

Record numbers of students have entered higher education in the past 10 years, but despite being the most educated generation in history, it seems that we’ve grown increasingly ignorant when it comes to basic life skills.

Looking back on my first weeks living in student halls, I consider myself lucky to still be alive. I have survived a couple of serious boiling egg incidents and numerous cases of food-poisoning, probably from dirty kitchen counters. Although some of my clothes have fallen victim to ironing experimentation, I think I have now finally acquired all the domestic skills I missed out in my modern education.

Educationist Sir Ken Robinson says that our current education system dislocates people from their natural talents and deprives us of what used to be passed from generation to generation – a working knowledge of basic life skills. Today’s graduates may have earned themselves distinctions in history, law or economics, but when it comes to simple things like putting up a shelf to hold all their academic books, or fixing a hole in their on-trend clothes, they have to call for help from a professional handyman or tailor.

Besides what we need to know for our own jobs, we must have practical skills. We don’t grow our own crops, build our own houses, or make our own clothes anymore; we simply buy these things. Unable to create anything ourselves, what we have mastered instead is consumption.

Sociologist Saskia Sassen argues that the modern liberal state has created a middle class that isn’t able to “make” anymore. I suggest that we start with the immediate reintroduction of some of the most vital aspects of “domestic science” education. Instead of only maths, language and history, we should create an interactive learning environment in schools where craftsmanship and problem-solving are valued as highly as the ability to absorb and regurgitate information. We need to develop children into people that not only think for themselves, but are also able to act for themselves.

Adapted from http://www.guardian.co.uk/education/mortarboard/2013/feb/25/well-educated-but-useless

In the sentence “Besides what we need to know for our own jobs, we must have practical skills.” (paragraph 4), the word besides can be replaced by

Na figura ao lado, ABCD é um retângulo e EF // AB. Sabendo-se que a medida do ângulo DÂC é metade da medida do ângulo BÂC, as medidas dos ângulos internos do triângulo EFC são