Um cilindro adiabático vertical foi dividido em duas partes por um êmbolo de 6 kg de massa que pode deslizar sem atrito. Na parte superior, fez-se vácuo e na inferior foram colocados 2 mols de um gás ideal monoatômico. Um resistor de resistência elétrica ôhmica R igual a  é colocado no interior do gás e ligado a um gerador elétrico que fornece uma corrente elétrica i constante, de 400 mA conforme ilustrado na figura abaixo.

Fechando-se a chave Ch durante 12,5 min o êmbolo desloca-se 80 cm numa expansão isobárica de um estado de equilíbrio para outro. Nessas condições, a variação da temperatura do gás foi, em ºC de a:

(EPCAR (AFA)) Considere a Terra um Planeta esférico, homogêneo, de raio R massa M concentrada no seu centro de massa e que gira em torno do seu eixo E com velocidade angular constante w isolada do resto do universo.

Um corpo de prova colocado sobre a superfície da Terra, em um ponto de latitude ⱷ descreverá uma trajetória circular de raio r e centro sobre o eixo E da Terra, conforme a figura abaixo. Nessas condições, o corpo de prova ficará sujeito a uma força de atração gravitacional F, que admite duas componentes, uma centrípeta, F_cp, e outra que traduz o peso aparente do corpo, P.

Quando ⱷ=0°, então o corpo de prova está sobre a linha do equador e experimenta um valor aparente da aceleração da gravidade igual a g_e. Por outro lado, quando ⱷ=90°, o corpo de prova se encontra em um dos Polos, experimentando um valor aparente da aceleração da gravidade igual a gp.

Sendo G a constante de gravitação universal, a razão g_e/g_p­ vale

Texto base:

Enunciado:

A partir de la lectura del fragmento, los amigos son/están

(UTFPR) O Império Bizantino, após a queda de Roma, gradativamente se afastou da influência ocidental e da autoridade exercida pelo papa. Em meados do século XI, após uma série de discordâncias, ocorreu o Cisma do Oriente que dividiu o cristianismo em duas partes. No Ocidente, a Igreja Católica Apostólica Romana se manteve, mas no Oriente, outra Igreja Cristã foi formada.

Assinale o nome que recebeu a Igreja do Império Bizantino:

(UERJ) The Genre of Autobiography and Autofiction

Derived from three Greek words meaning “self”, “life” and “write”, autobiography is a style of writing that has been around nearly as long as history has been recorded. Yet, autobiography was not classified as a genre within itself until the late eighteenth century.

In his book, Inside out, E. Stuart Bates offers a functional definition of autobiography as “a narrative of the past of a person by the person concerned”. That definition, however, is too broad for some literary critics. Many, such as Philippe Lejeune, wish to define the genre more narrowly: “(a) retrospective prose narrative produced by a real person concerning his own existence, focusing on his individual life, in particular on the development of his personality”.

Despite disagreements concerning how inclusive the category of autobiography should be, there are characteristics that are common to the majority of autobiographical works. These features are the grammatical perspective of the work, the identity of the self, self-reflection and introspection.

Most autobiographies are written from the first person singular perspective. The author, the narrator and the protagonist must share a common identity for the work to be considered an autobiography. This common identity could be similar, but is not identical. The self that the author constructs becomes a character within the story that may not be a completely factual representation of the author’s actual past self.

In their book The voice within, Roger Porter and H. R. Wolf state that “truth is a highly subjective matter, and no autobiographer can represent exactly what happened back then, any more than a historian can definitively describe the real truth of the past”.

Because the author cannot describe events objectively, even the most accurate autobiographies have fictional elements. The blurring of fiction and truth characteristic of autobiography has even led to the creation of a subdivision within the genre of autobiography that deals with fictionalized self-accounts. For this style of writing that blends characteristics of both fiction and autobiography, Serge Doubrovsky coined the literary term “autofiction”.

The difference between traditional autobiography and the genre of autofiction is that autobiographers are attempting to depict their real life, while writers of autofiction are only basing their work upon real experiences. Writers of autofiction are not expected to be as historically accurate as possible as autobiographers are. According to Alex Hughes, authors of autofiction are saying “this is me and this is not me”. ¹This sums up autofiction. Autofiction draws from the life of the writer with the addition of fictional elements to make the work more than just a life story.

Autobiography is a popular genre. ²Writers of memoirs and life stories never lack an audience. People are interested in the actual lives of others and want to know about others’ pasts and feelings and desires. Autobiography is a way to organize the story of a life and reflect on the past in order to better understand the present.

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Writers of memoirs and life stories never lack an audience. People are interested in the actual lives of others (ref. 2)The semantic relationship between the two sentences above can be made explicit by the addition of following connective: