(ITA - 2018 - 1 FASE) Dois recipientes Ae Bde respectivos volumes VAe VB=VAconstantes, contm um gs ideal e so conectados por um tubo fino com vlvula que regula a passagem do gs, conforme a figura. Inicialmente o gs em A est na temperatura TAsob presso PAe em B,na temperatura TBsob presso PB.A vlvula ento aberta at que as presses finais PAfe PBfalcancem a proporo PAf/PBf =,mantendo as temperaturas nos seus valores iniciais. Assinale a opo com a expresso de PAf.
(ITA - 2018 - 1 Fase) Deseja-se aquecer 586 gde gua pura da temperatura ambiente at 91 Cem presso ambiente. Utilizando um forno de micro-ondas convencional que emite radiao eletromagntica com frequncia de 2,45 GHze considerando a capacidade calorfica da gua constante e igual a 4,18 J g-1 C-1assinale a alternativa que apresenta o nmero aproximado de ftons necessrio para realizar este aquecimento. Dados: constante de Planck (h) =6,63 x 10-34 J.s
(ITA - 2018 - 1 Fase) Em temperatura ambiente, adicionou-se uma poro de cido clordrico 6 mol L1a uma soluo aquosa contendo os ons metlicos Co2+, Cu2+, Hg22+e Pb2+. Assinale a opo que apresenta os ons metlicos que no foram precipitados.
(ITA - 2018 - 1 FASE) Numa quadra de volei de 18 mde comprimento, com rede de 2,24 m de altura, uma atleta solitria faz um saque com a bola bem em cima da linha de fundo, a 3,0 mde altura, num ngulo de 15 com a horizontal, conforme a figura, com trajetria num plano perpendicular rede. Desprezando o atrito, pode-se dizer que, com 12 m/sde velocidade inicial, a bola
(ITA - 2018 - 1 FASE) (3 questo sobre o texto) WE RECORDED VCs CONVERSATIONS AND ANALYZED HOW DIFFERENTLY THEY TALK ABOUT FEMALE ENTREPRENEURS When venture capitalists (VCs) evaluate investment proposals, the language they use to describe the entrepreneurs who write them plays an important but often hidden role in shaping who is awarded funding and why. [] We were given access to government venture capital decision making meetings in Sweden and were able to observe the types of language that VCs used over a two-year period. One major thing stuck out: The language used to describe male and female entrepreneurs was radically different. And these differences have very real consequences for those seeking funding and for society in general. [] Worldwide, government venture capital is important for bridging significant financial gaps and supporting innovation and growth, as VCs can take risks where banks are not allowed to. When uncertainty is high regarding assessment of product and market potential, for example, the assessment of the entrepreneurs potential becomes highly central in government VCs decision making. In Sweden, about one-third of businesses are owned and run by women, 1although they are not granted a corresponding proportion of government funding. In fact, women-owned businesses receive much less only 13%18%, the rest going to male-owned companies. This brings us back to our research. From 2009 to 2010 we were invited to silently observe governmental VC decision-making meetings and, more important, the conversations they had about entrepreneurs applying for funding. [] We observed closed-room, face-to-face discussions leading final funding decisions for 125 venture applications. Of these, 99 (79%) were from male entrepreneurs and 26 (21%) were from female entrepreneurs. The group of government venture capitalists observed included seven individuals: two women and five men. [] 2Aside from a few exceptions, the financiers rhetorically produce stereotypical images of women as having qualities opposite to those considered important to being an entrepreneur, with VCs questioning their credibility, trustworthiness, experience, and knowledge. 3Conversely, when assessing male entrepreneurs, financiers leaned on stereotypical beliefs about men that reinforced their entrepreneurial potential. Male entrepreneurs were commonly described as being assertive, innovative, competent, experienced, knowledgeable, and having established networks. We developed male and female entrepreneur personas based on our findings []. These personas highlight a few key differences in how the entrepreneurs were perceived depending on their gender. Men were characterized as having entrepreneurial potential, while the entrepreneurial potential for women was diminished. Many of the young men and women were described as being young, though youth for men was viewed as promising, while young women were considered inexperienced. Men were praised for being viewed as aggressive or arrogant, while womens experience and excitement were tempered by discussions of their emotional shortcomings. Similarly, cautiousness was viewed very differently depending on the gender of the entrepreneur. Unsurprisingly, these stereotypes seem to have played a role in who got funding and who didnt. Women entrepreneurs were only awarded, on average, 25% of the applied-for amount, 4whereas men received, on average, 52% of what they asked for. Women were also denied financing to a greater extent than men, with close to 53% of women having their applications dismissed, compared with 38% of men. [] Such stereotyping will inevitably influence the distribution of financing, but could also have other major consequences. 5Because the purpose of government venture capital is to use tax money to stimulate growth and value creation for society as a whole, gender bias presents the risk that the money isnt being invested in businesses that have the highest potential. This isnt only damaging for women entrepreneurs; its potentially damaging for society as a whole. Fonte: Adaptado de Harvard Business Review https://hbr.org/2017/05/we-recorded-vcs-conversations-and-analyzedhow-differently-they-talk-about-female-entrepreneurs. Acesso em: 17 mai. 2017. De acordo com as observaes dos pesquisadores, para os investidores (VCs)
(ITA - 2018 - 1 FASE) Considere o texto We recorded VCs conversations and analyzed how differently they talk about female entrepreneurs De acordo com o texto, correto afirmar que
(ITA - 2018 - 1 FASE) (1 questo sobre o texto) A(s) questo(es) refere(m)-se tirinha a seguir: A me de Helga pergunta What did you ever see in that man? porque
(ITA - 2018 - 1 Fase) So feitas as seguintes proposies a respeito de propriedades coligativas: I. A presso osmtica depende do tipo de solvente para um dado soluto. II. A criometria usa o abaixamento do ponto de congelamento do solvente para medir a massa molar do soluto. III. Na ebuliometria, a variao da temperatura de ebulio depende da concentrao molal de soluto no voltil utilizado. IV. Na tonometria, ocorre abaixamento da presso de vapor de uma soluo que contm um soluto no voltil, em relao ao solvente puro. Das proposies acima (so) CORRETA(S)
(ITA - 2018 - 1 FASE) Sejamenmeros inteiros positivos. Seeso, nessa ordem, termos consecutivos de uma progresso geomtrica de razoe o termo independente de igual a 7920, ento+
(ITA - 2018 - 1 Fase) Um recipiente de paredes adiabticas e de volume constante contm duas amostras de gua pura separadas por uma parede tambm adiabtica e de volume desprezvel. Uma das amostras consiste em 54 gde gua a 25Ce, a outra, em 126 ga 75 CConsidere que a parede que separa as amostras retirada e que as amostras de gua se misturam at atingir o equilbrio. Sobre esse processo so feitas as seguintes afirmaes: I. A temperatura da mistura no equilbrio de 323 K II. A variao de entalpia no processo nula. III. A variao de energia interna no processo nula. IV. A variao de entropia no processo nula. Assinale a opo que apresenta a(s) afirmao(es) CORRETA(S) sobre a mistura das amostras de gua.
(ITA - 2018 - 1 Fase) Dentre os processos qumicos abaixo, assinale aquele que ocorre em uma nica etapa elementar.
(ITA - 2018 - 1 FASE) Um tubo fino de massa 1.225 ge raio r = 10,0 cmencontra-se inicialmente em repouso sobre um plano horizontal sem atrito. A partir do ponto mais alto, um corpo de massa 71,0 gcom velocidade inicial zero desliza sem atrito pelo interior do tubo no sentido anti-horrio, conforme a figura. Ento, quando na posio mais baixa, o corpo ter uma velocidade relativa ao tubo, em cm/s, igual a
(ITA - 2018 - 1 FASE) Uma massa m de carga q gira em rbita circular de raio R e perodo T no plano equatorial de um m. Nesse plano, a uma distncia r do m, a intensidade do campo magntico em que uma constante. Se fosse de 4R o raio dessa rbita, o perodo seria de
(ITA - 2018 - 1 Fase) Considere um recipiente de 320 Lao qual so adicionados gases ideais nas seguintes condies: I. Hlio: 30.000 cm3a 760 cmHge 27C II. Monxido de carbono: 250 La 1.140 mmHge -23 C III. Monxido de nitrognio: 2 m3a 0,273 atme 0 C Sabendo que a presso total da mistura gasosa de 4,5 atmassinale a opo que apresenta a presso parcial do hlio na mistura gasosa.
(ITA - 2018 - 1 FASE) So feitas as seguintes proposies a respeito da produo de biocombustveis: I. A hidrlise cida de triacilgliceris a etapa final na produo do biodiesel. II. Etanol comumente produzido por processo de fermentao, o qual gera CO2como subproduto. III. Na sntese do bioquerosene, podem ser utilizados cidos graxos com cadeias lineares ou cclicas, saturadas ou insaturadas. Das proposies acima, est(o) CORRETA(S)