Questões de Vestibular UFPA 2011 para Vestibular, PROVA OBJETIVA – 2ª Fase
Foram encontradas 33 questões
Na figura, AB = BD.
Calcule o valor do ângulo θ.
1. A primeira célula (I) contém uma solução de AgNO3 entre dois eletrodos de prata;
2. A segunda (II) contém uma solução de um único sal de ouro (onde o nox do ouro é desconhecido) entre dois eletrodos de ouro.
Deixando a corrente passar durante certo tempo por este conjunto, observa-se que no catodo da célula (I) são depositados 1,079 g de prata, enquanto no catodo de célula (II) são depositados 0,657 g de ouro. Sabendo que no cátodo de cada célula ocorre somente um tipo de reação, qual das opções a seguir contém a afirmação FALSA em relação aos procedimentos e informações relacionados com a questão?
Dados: (1F = 96.500C).
I. reatividade com NaHCO3, liberando gás;
II. reatividade com CH3OH, em meio ácido;
III. em meio aquoso apresenta pH menor que 7.
A partir dessas informações, pode-se dizer que este composto pertence à função orgânica:
A frase acima pode ser atribuída a:
Na tirinha acima, o personagem Calvin se faz algumas perguntas que podemos caracterizar como sendo de cunho profundamente filosófico. Sobre a origem da filosofia, analise as afirmativas abaixo e, posteriormente, assinale a alternativa correta.
I. A Filosofia nascente é grega, isto é, surgiu na Grécia no século V a.C., e a invenção da palavra Filosofia, que é a junção de philos (amor) e sophia (sabedoria), significando amor à sabedoria, é atribuída a Pitágoras.
II. Ao contrário de disciplinas como a Física, não existe uma Filosofia, mas sim filosofias.
III. Para Platão, a filosofia é o uso do saber em proveito do homem. Isso implica a posse ou aquisição de um conhecimento que seja, ao mesmo tempo, o mais válido e o mais amplo possível.
IV. A filosofia toma para si a árdua tarefa de debater problemas ou especular sobre problemas
que ainda não estão abertos aos métodos científicos: o bem e o mal, o belo e o feio, a ordem e
a liberdade, a vida e a morte.
Quadrinhos da Mafalda (Quino)
Chamamos de etnocentrismo quando falamos da superioridade de uma cultura sobre a outra, gerando um olhar carregado de intolerância e preconceito. Termos como “bárbaros” (Roma Antiga) ou “selvagens” (Grandes Navegações) são exemplos de como essa visão etnocêntrica foi promovida com o passar dos tempos. Sobre o etnocentrismo na atualidade, analisando o enunciado e os quadrinhos acima, podemos afirmar que:
O Analfabeto Político
O pior analfabeto É o analfabeto político, Ele não ouve, não fala, Nem participa dos acontecimentos políticos. Ele não sabe que o custo de vida, O preço do feijão, do peixe, da farinha, Do aluguel, do sapato e do remédio Dependem das decisões políticas.
Com relação ao processo político, o Estado é uma organização político-administrativa que se caracteriza pela garantia dos direitos para todos (Constituição) a partir de uma democracia participativa e representativa viabilizada no Brasil por meio das eleições. De acordo com as leituras do poema de Brecht e dos quadrinhos acima, podemos afirmar que no Brasil:
Water availability and access are key constraints to poverty reduction and food security. Maintaining enough water for agriculture of reasonable quality will be increasingly difficult due to climate change, competition for water with industries, urban uses and the environment, and the need to produce biofuels. Much of the world is faced with a situation where water supplies for various uses are overallocated, with river flows much reduced, groundwater levels dropping, and important ecosystems threatened - a situation of physical water scarcity. Much of this is driven by agricultural water use. In other parts of the world, availability of water in rivers, wetlands, and aquifers is ample, but access is difficult because people have not found means to develop the water resource - a situation of economic water scarcity. Adaptive management strategies are required to balance decreasing availability with increasing demand, while coping with uncertainties. These include water allocation strategies, development of appropriate types of water storage ranging from small ponds to large reservoirs and from surface structures to managed aquifers, and adopting policies that provide incentives to use water differently. As new water infrastructure is a key strategy for improving secure access for agriculture, the theme considers various benefits and costs of infrastructural development. The overall aim is to maintain equity in water access, agricultural productivity, human health and environmental quality in the face of increasing water scarcity at local, basin and transboundary scales via development of adaptive management strategies, policy responses and tradeoffs.
Water availability and access are key constraints to poverty reduction and food security. Maintaining enough water for agriculture of reasonable quality will be increasingly difficult due to climate change, competition for water with industries, urban uses and the environment, and the need to produce biofuels. Much of the world is faced with a situation where water supplies for various uses are overallocated, with river flows much reduced, groundwater levels dropping, and important ecosystems threatened - a situation of physical water scarcity. Much of this is driven by agricultural water use. In other parts of the world, availability of water in rivers, wetlands, and aquifers is ample, but access is difficult because people have not found means to develop the water resource - a situation of economic water scarcity. Adaptive management strategies are required to balance decreasing availability with increasing demand, while coping with uncertainties. These include water allocation strategies, development of appropriate types of water storage ranging from small ponds to large reservoirs and from surface structures to managed aquifers, and adopting policies that provide incentives to use water differently. As new water infrastructure is a key strategy for improving secure access for agriculture, the theme considers various benefits and costs of infrastructural development. The overall aim is to maintain equity in water access, agricultural productivity, human health and environmental quality in the face of increasing water scarcity at local, basin and transboundary scales via development of adaptive management strategies, policy responses and tradeoffs.
Water availability and access are key constraints to poverty reduction and food security. Maintaining enough water for agriculture of reasonable quality will be increasingly difficult due to climate change, competition for water with industries, urban uses and the environment, and the need to produce biofuels. Much of the world is faced with a situation where water supplies for various uses are overallocated, with river flows much reduced, groundwater levels dropping, and important ecosystems threatened - a situation of physical water scarcity. Much of this is driven by agricultural water use. In other parts of the world, availability of water in rivers, wetlands, and aquifers is ample, but access is difficult because people have not found means to develop the water resource - a situation of economic water scarcity. Adaptive management strategies are required to balance decreasing availability with increasing demand, while coping with uncertainties. These include water allocation strategies, development of appropriate types of water storage ranging from small ponds to large reservoirs and from surface structures to managed aquifers, and adopting policies that provide incentives to use water differently. As new water infrastructure is a key strategy for improving secure access for agriculture, the theme considers various benefits and costs of infrastructural development. The overall aim is to maintain equity in water access, agricultural productivity, human health and environmental quality in the face of increasing water scarcity at local, basin and transboundary scales via development of adaptive management strategies, policy responses and tradeoffs.