Cadernos
(FUVEST 2012 1ª FASE) Considere a matriz
em que a é um número real. Sabendo que A admite inversa A-1 primeira coluna é
a soma dos elementos da diagonal principal de A-1 é igual a
Questões relacionadas
- Língua Inglesa | 1.4 Reading Strategies
Australians are not known for their love of boat people. They famously turned away a small group of Afghan refugees at the height of the war and rather amusingly, ran a scare campaign featuring crocodiles and sharks to deter would-be immigrants. But if global warming continues at its current rate, neighbouring Pacific islands could be lost to floods and Australia will be facing a new kind of intruder: climate refugees. Although the Red Cross produced a report four years ago estimating that 58 per cent of refugees are caused by environmental factors, no one has made any attempt to tackle the issue. Oxford University’s Norman Myers recently claimed that there could be an estimated 150 million environmental refugees within the next 50 years, and half of these could land on Australia’s doorstep. But the UN refuses to grant them refugee status, and aid groups and environmentalists squabble over whose responsibility they are.
DAZED & CONFUSED July 2005
(FUVEST 2006 1ª FASE) The passage says that Afghan refugees
- Biologia | 13.3 Variações da Primeira Lei
(UCS) Em um experimento hipotético, um pesquisador identificou que uma borboleta apresentava três diferentes fenótipos: borboleta vermelha, borboleta branca e borboleta rosa. As borboletas vermelhas e brancas são homozigotas e as rosas são heterozigotas. Com o intuito de entender o tipo de herança, o pesquisador cruzou as borboletas __________ com as borboletas __________ e obteve uma prole com 50% de borboletas vermelhas. Esse tipo de herança é chamada de __________.
Assinale a alternativa que completa, correta e respectivamente, as lacunas acima.
- Física | 4.4 Lentes e Visão
(FUVEST 2019 1° FASE) Uma pessoa observa uma vela através de uma lente de vidro biconvexa, como representado na figura.
Considere que a vela está posicionada entre a lente e o seu ponto focal F. Nesta condição, a imagem observada pela pessoa é
- Biologia | 8.6 Verminoses
(CFT-MG) Observe a foto de um indivíduo com parasitose.
Essa pessoa adquiriu a doença porque
- Inglês - Fundamental | Não Possui Tópico Definido
Read the text and answer question. Nanotechnology Material May Supercharge Internet Stefan Lovgren
for National Geographic News August 19, 2004 Scientists have discovered a nanotechnology that could be used to make the Internet a hundred times faster than it is today. Canadian researchers have devised a new polymer material by manipulating buckyballs (carbon atoms that look like soccer balls). The technology could be used to create optical (light based) switches to replace electronic network switches. It could lead to an Internet based entirely on light. Nanotechnology is the art of manipulating materials on an atomic or molecular scale. "Our discovery is a showcase for what nanotechnology is really about … creating custom materials from the molecule up," said Ted Sargent, a professor in the electrical and computer engineering department at the University of Toronto. Until now scientists have been unsuccessful in realizing theoreticians' predictions of the power of light to control light. The failure of real materials to live up to their theoretical potential has become known as the "Kuzyk quantum gap." The latest technology was described in the August 11 issue of the scientific journal Nano Letters. Available at: http://news.nationalgeographic.com/news/2004/08/0819_040819_nanointernet.html. Accessed on July 4, 2011.
Enunciado:
Internet can be faster because