Uma lona com formato de triângulo isósceles ABC, com AB = BC = 30 m e AC = 24 m, está mostrada na figura.

O vértice B está a uma distância de 18 m do chão. Ao meio dia, o Sol projeta no solo uma sombra dessa lona no formato de triângulo:

(UNISC) Ao jogar uma moeda de cobre em uma solução de nitrato de prata, observa-se a formação de um depósito de prata metálica sobre a moeda. Classifique esta reação de acordo com a formação de nitrato de cobre (II).

Considere o esquema abaixo (fora de escala de tamanho e distância).

A imagem acima

(UFSJ) 12 August 2011 Last updated at 09:37 GMT

Sesame Street pair Bert and Ernie 'will not marry'

The makers of Sesame Street say characters Bert and Ernie will not marry in a same-sex ceremony despite an online petition calling for the union.

Campaigners say the best friends should marry as a way to encourage tolerance of gay people.

Nearly 7,000 have signed the petition, with more than 3,000 joining a Bert and Ernie Get Married Facebook page.

A statement from the show's makers said: "They remain puppets and do not have a sexual orientation."

But ¹they conceded that the pair are "male characters and possess many human traits and characteristics".

The confirmed bachelors have lived together for 40 years and sleep in the same bedroom, ³albeit in single beds.

"Bert and Ernie are best friends," the statement from Sesame Workshop added. "They were created to teach preschoolers that people can be good friends with those ²who are very different from themselves.

The online petition states: "We are not asking that Sesame Street do anything crude or disrespectful," adding, "It can be done in a tasteful way. Let us teach tolerance of those that are different."

Sesame Street was created by TV producer Joan Ganz Cooney and psychologist Lloyd Morrisett in 1969 and gained a huge following, led by the creations of master puppeteer Jim Henson.

Beloved characters include Elmo, the Cookie Monster and Big Bird.

Taken from: BBC News/Entertainment & Arts. Access: August 18^th, 2011

The word albeit (ref. 3) could be replaced by

For most, The Gateway International Bridge functions as it should, allowing people to get between the U.S. and Mexico. But on a hot Sunday afternoon, a dozen migrants at the mouth of the bridge weren’t getting anywhere at all. They had been told, once again, to wait.
At a press conference the next day, President Trump once again touted the border wall he has promised supporters. “The wall is getting longer and taller and stronger each and every day”, he said, even though construction has not begun. The President’s characterization of the physical wall was false, but his Administration has effectively erected an invisible one.
It is built, in part, from situations like the one at the bridge, which illustrates the problem with this kind of barrier. The practices that Trump praises for keeping out criminals also punish those who are trying to follow the rules.
Those migrants who spoke to TIME at the bridge had varied stories but shared a determination to cross. Some understood a bit of what could happen to them next. How long could it take to get processed? And if they did ultimately apply for asylum, it remained to be seen whether their stories would qualify. The regulations governing such matters are complicated, and the vast majority who apply are rejected. But in theory, their fates would be decided at immigration courts, not at the border.

TIME, August 23, 2018. Adaptado.

(FUVEST 2019 1° FASE) De acordo com o texto, para ingresso nos Estados Unidos, o cruzamento da fronteira entre este país e o México, no local denominado The Gateway International Bridge, é