QUESTÃO 01 - VALOR: 10,0 - No dia 7 de fevereiro de 1984, a uma altura de 1 com uma velocidade de cerca de 29 000 km/h, Bruce Mc Candless saindo de
estar preso por nenhuma corda, tornou-se o primeiro satélite humano. Sabe-se
entre o astronauta e a Terra é proporcional a (m. M)/r", onde me a massa do astr
a distância entre o astronauta e o centro da Terra.
(Halliday, Resnick e Walker, "Fundamentos de Física". v. 2.
Na situação descrita no texto, com o referencial na Terra, o astronauta Bruce
a) não tem peso.
b) sofre, além do peso, a ação de uma força centrifuga.
c) sofre, além do peso, a ação de uma força centripeta.
d) tem peso, que é a resultante centripeta.
e) tem peso aparente nulo graças à ação da força centrifuga.

Utah's great salt lake has an average salinity seven times higher than that of the oceans. very few multicellular organisms live in this harsh environment. an example is the brine shrimp, which must devote a large portion of its metabolic energy to osmoregulation. these brine shrimp must available hint(s)utah's great salt lake has an average salinity seven times higher than that of the oceans. very few multicellular organisms live in this harsh environment. an example is the brine shrimp, which must devote a large portion of its metabolic energy to osmoregulation. these brine shrimp must pump water back into their cells to counter its loss due to osmosisactively pump water back out of their cells to counter its inflow due to osmosissynthesize membranes that are impermeable to substances that upset osmotic balanceactively pump salt back out of their cells to counter its inflow due to osmosis

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?