Considere uma espira retangular de lados a e b percorrida por uma corrente I, cujo plano da espira é paralelo a um campo magnético B. Sabe-se que o módulo do torque sobre essa espira é dado por  Supondo que a mesma espira possa assumir qualquer outra forma geométrica, indique o valor máximo possível que se consegue para o torque. 

Um homem, portador de aglutinina anti-A e anti-B e Rh negativo, casou-se com uma mulher que não porta aglutinogênio nas hemácias e é Rh positivo. Sabe-se que a mãe dessa mulher não é portadora do fator Rh. Qual a probabilidade desse casal ter uma menina sem aglutinogênio nas hemácias e ser portadora do fator Rh? 

De acordo com os conjuntos numéricos, analise as afirmativas abaixo:

I. Todo número natural é inteiro.

II. A soma de dois números irracionais é sempre irracional.

III. Todo número real é complexo.

IV. Todo número racional é inteiro.

São verdadeiras as afirmativas 

(FUVEST 2009 1ª FASE) A imigração de italianos (desde o final do século XIX) e a de japoneses (desde o início do século XX), no Brasil, estão associadas a

(CEFET-MG) The following text was published on the Markkula Center for Applied Ethics website at Santa Clara University. It’s a blog post written by an Ethics teacher. Read it and answer question(s).

The Big Q

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Can You Keep a Secret?

Monday, Mar. 25, 2013

The best student comment on “Can You Keep a Secret?” wins a $100 Amazon gift certificate. Entries must be received by midnight, Sunday, April 7, 2013. Subscribe to the blog (by RSS or by e-mail in the right hand column) for updates.

**DISCLAIMER: All characters and scenarios in this post are fictional.**

Scott couldn’t believe his eyes when he checked Facebook this morning. A new page, “SCU Confessions,” had just been created, and one of the first “confessions” was about him! Someone shared a story where he had gotten really drunk last week and did a few things he wasn’t proud of. Granted, he wasn’t mentioned by name, but it was a unique enough situation that everyone he knew would recognize it as being about him.

Scott had heard about other schools starting pages like this, where people message the page administrator their secrets, hook-up stories, dirty deeds, and anything else that they would want to share anonymously. Scott initially thought these pages were hilarious, and even “liked” the ones from other schools just ¹so that he could be entertained. However, now that he was reading something about him, he felt embarrassed and upset. Already it had 50 “likes” and counting, and several of his friends tagged him in the comments ²so that he would see it. To make matters worse, the post was anonymous, so he had no way of knowing who was spreading the story around.

Scott’s friends told him to laugh it off; it wasn’t that big of a deal. Even he had to admit that the story was objectively pretty funny, and most of the other posts on the page were relatively harmless as well. On the other hand, he could envision how people would take advantage of the anonymity and could potentially cause somebody real harm.

What do you think about Facebook college “Confessions” or “Hook-Up” pages? Do you feel like this type of anonymous sharing can be hurtful and even dangerous, or do you think it’s a harmless way to tell funny stories? Have you ever submitted anything to a page like this, or been mentioned in a post?Posted by Chloe Wilson

Available at: <  http://www.scu.edu/r/ethics-center/ethicsblog/thebigq/15790/ Can-You-Keep-a-Secret?> . Accessed on: April 2013.

The linking word “so that” (ref. 1 e 2) expresses