(UCS) Misturando-se 200 miligramas de uma substância A e 300 miligramas de uma substância B obtém-se um produto cujo custo é de R$ 4,00 por miligrama. Porém, se forem misturados 300 miligramas da substância A com 200 miligramas da substância B o valor do produto será de R$ 3,00 por miligrama. Qual seria o preço do produto, por miligrama, se ele fosse composto por 250 miligramas de cada uma das substâncias A e B? 

Considere duas garrafas idênticas, uma contendo 1 kg de leite e outra contendo 1 kg de água, ambas inicialmente a 15ºC e expostas à temperatura ambiente de 21ºC A capacidade térmica do leite integral é, aproximadamente, 3,93kJ/kg.K  e da água é 4,19kJ/kg.K   Considere que a condutividade e a emissividade térmica sejam as mesmas para os dois líquidos. Com base nessas informações, é correto afirmar que, ao atingir o equilíbrio térmico com o ambiente,

(MACKENZIE) Considere as seguintes substâncias orgânicas:

I. CH₃COOH

II. CH₂ClCOOH.

III. CH₃CH₂COOH

IV. CCl₃COOH

Assinale a alternativa correta para a ordem crescente de caráter ácido dessas substâncias

(PUC-RIO) Are You A Digital Native or A Digital Immigrant?

We all know that we are living in an increasingly technologically driven world. Living here in the heart of Silicon Valley I certainly feel it every day. In fact, I don’t think I know a single couple in my neighborhood, other than my wife and I, who don’t work in the technology field in some capacity. Our local companies are Facebook, Apple, Google, Yahoo, and so many venture capital firms that I can’t keep them straight. But you don’t have to live in Silicon Valley to feel that the world is getting more and more technology centered, focused, and driven. We can debate the pros and cons of this reality but ⁹we can’t deny that the world has changed very quickly in head spinning ways. Two recent comments led me to finally enter the 21^st century ²by getting a smart phone this week, kicking and screaming.

First, I mentioned to one of my undergraduate classes at Santa Clara University that I didn’t have a smart phone, but rather I had a ⁸dumb phone. ¹⁰My phone can make and receive phone calls and that’s about it. No email, internet, and so forth. ³So one of my students looked at me in an odd and curious way, like she was talking to someone from another planet, and stated in ¹¹a matter of fact manner, “Professor Plante, even 2^nd graders have smart phones.” Ouch!

Second, ⁴I was talking with a producer at the PBS NewsHour who wanted me to do a live interview within a few hours of his call regarding some late breaking news about clergy sexual abuse, which is my specialty. I was out of the office and driving my car when he called and in ¹²a matter of fact manner he said that he wanted to send me some important information to my smart phone to best prepare me for the upcoming interview. When I told him that I couldn’t receive anything since I had a dumb phone and not a smart phone, there was a long silence. ¹He then said he’d have to just read it to me over the phone as a Plan B. He wasn’t happy ... neither was I.

⁷In case you haven’t noticed, the 21^st century is really upon us and to live in it one really does need to be connected in my view. Although I often consider myself a 19^th or 20^th century guy trapped in the 21^st century we really do need to adapt. For most of us we are just living in a new world that really demands comfort with and access to technology.

This notion of digital native vs. digital immigrant makes a great deal of sense to me. Young people in our society are digital natives. They seem to be very comfortable with everything from iPhones to TV remotes. Digital immigrants, like me, just never feel that comfortable with these technologies. Sure we may learn to adapt by using email, mobile phones, smart ones or dumb ones, Facebook, and so forth but it just doesn’t and perhaps will never be very natural for us. It is like learning a second language ... you can communicate but with some struggle.

This has perhaps always been true. I remember when I was in graduate school in the 1980s trying to convince my grandparents that buying a telephone answering machine as well as a clothes dryer would be a good idea. They looked at me like I was talking in another language or that I was from another planet.

⁵Perhaps we have a critical period in our lives for technology just like we do for language. ⁶When we are young we soak up language so quickly but find it so much harder to learn a new language when we are older. The same seems to be true for technology.

So, this week I bought my first smart phone and am just learning to use it. When questions arise, I turn to my very patient teenage son for answers. And when he’s not around, I just look to the youngest person around for help.

So, what about you? Are you a digital native or a digital immigrant and how does it impact your life?Adapted from “Digital Native vs. Digital Immigrant? Which are you?”

            Published on July 24, 2012 by Thomas G. Plante, Ph.D., ABPP in Do the Right Thing http://www.psychologytoday.com/blog/do-the-right-thing/201207/digital-native-vs-digital-immigrant-which-are-you retrieved on July 28, 2012

“We can’t deny” in “...we can’t deny that the world has changed very quickly...” (ref. 9) and “My phone can make” in “My phone can make and receive phone calls...” (ref. 10) express the ideas of, respectively:

Em nome do “terceiro império romano” (Mussolini prometia séculos ou até mesmo milênios de poder fascista), pedia-se aos homens de cultura a contribuição que cada um era capaz de fornecer à máquina do consenso. Em troca, o regime ofereceria, além do reconhecimento ideal, tangíveis sinais do novo interesse do Estado pelos “trabalhadores da mente”: ocasiões de trabalho, instituições para organizar (e controlar) as diversas categorias, solitações de obras públicas para os arquitetos e urbanistas, possibilidade de publicar (também junto a entidades de prestígio, como a Enciclopédia Italiana, dirigida por Gentile), para os estudiosos, novos lugares de exposição para os artistas, enfim, iniciativas de todo tipo e relevância para todos. Cada categoria, rapidamente, é “enquadrada” não no âmbito do partido, mas nas novas estruturas sindicais das categorias intelectuais.

        http://www.mac.usp.br/mac/conteudo/academico/publicacoes/anais/modernidade. Acesso 12.09.2022. VOT2022

  O Fascismo conquistou o respaldo de muitos setores da população, conseguindo um amplo apoio junto à elite intelectual. Com o apoio dessa intelectualidade o Estado totalitário