8. Responde às seguintes questões.
Um cubo de volume 5 cm foi colocado num líquido de massa volúmica 780 kg/m². Sabendo que
o cubo ficou totalmente imerso, responde às seguintes questões. (g = 10 m/s)
a) Qual o valor da impulsão sofrida pelo cubo?
b) Que Lei utilizaste para responder à alínea anterior?

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?

Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.

Explain what will happen if decomposers were apsent from a forest ecoysystem.