Considere que dois corpos de massas respectivamente iguais a M e m, atraem-se gravitacionalmente com força de intensidade F, quando separados por uma distância d. Se esses corpos se aproximarem até ficarem a uma distância d/3 entre si, qual será a nova intensidade da força de atração gravitacional, em função de F, entre eles?

Determine o valor de !$ m !$ de modo que uma das raízes da equação !$ x^2-6x+(m+3)=0 !$ seja igual ao quíntuplo da outra:

Em um grupo de 20 pessoas existem 10 engenheiros e 10 advogados. Quantas comissões de 5 pessoas é possível formar, se em cada uma deve haver 3 engenheiros e 2 advogados?

Um objeto realiza um Movimento Harmônico Simples (MHS), segundo a seguinte função, no Sistema Internacional de Unidades:

!$ X=0,2.\cos \left( {\large{ \pi \over 3}}.t+ \pi \right) !$

Determine o valor do módulo da velocidade V do objeto, em m/s, no instante t = 3 s.

Dado !$ \tan(x)+\operatorname{cot g}(x)=5/2 !$, determine !$ \sin 2x !$:

Choose the alternative that you can find Passive Voice tense:

Read the text a n d answer question.

Being famous

Sandra is very beautiful, young, and successful. She’s a famous actress. She’s also very rich. Her house near the beach is big and beautiful, and her car is very expensive. Her fans love her. But is she happy?

Sandra says, “Yeah, I’m young, rich, beautiful, and famous. People think rich people are happy. That’s not always true!”

Sandra’s brother, Mike, is her manager. He says, “Sandra is only 18. She enjoys acting and entertaining people. But she’s not happy. She doesn’t like being famous.”

“It’s true,” Sandra says. “I’m never alone. Reporters are everywhere. Wherever I go, they’re there. They’re outside my house all the time! That’s so annoying!”

Adapted from: https://www.inglesnapontadalingua.com.br/2008/10/texto-de-inglsalunos-de-nvel-bsico.html

According to the text, Sandra is

Read the text and answer question.

Thinking Out Loud

Ed Sheeran

When my hair’s all but gone and my memory fades
And the crowds don’t remember my name
When my hands don’t play the strings the same way, mm
I know you will still love me the same
‘Cause honey your soul can never grow old, it’s evergreen
Baby your smile’s forever in my mind and memory
I’m thinking ‘bout how people fall in love in mysterious ways
Maybe it’s all part of a plan
I’ll just keep on making the same mistakes
Hoping that you’ll understand

Adapted from: https://www.letras.mus.br

Reading the text, you can infer that a man

A figura a seguir representa um bloco em forma de paralelepípedo, em repouso, com arestas iguais a 2 cm, 4 cm e 5 cm. Determine a razão R entre as pressões exercidas pela face de maior área e a de menor área, ambas sobre o solo. Dado: massa do bloco igual a 2 Kg e aceleração da gravidade g = 10 m/s².

Read the text a n d answer question.

Brazilian airforce airlifted 4 Polish citizens from the coronavirus-stricken Chinese city Wuhan

The President of Brazil, Jair Bolsonaro, has aided Poland by helping to evacuate 4 Polish citizens from the Coronavirusstricken Chinese city Wuhan. A Brazilian air force plane landed in Warsaw to drop the 4 Poles off, after which it continued its journey from Wuhan to Brazil. A total of 34 Brazilians were quarantined for 18 days after returning back home.

https://polanddaily.com/959-brazilian-airforce-airlifted-4-polish-citizensfrom-the-coronavirus-stricken-chinese-city-wuhan

The sentence in bold in the text is in the: