2) Desde un globo aerostático, que está a una altura de 3710 m y subiendo con una velocidad ascendente de 36 m/s, se suelta un paquete de medicinas de 80 kg. Calcula:
a) La energia mecánica del paquete cuando llega al suelo.
b) La altura que haya descendido cuando alcanza una velocidad de 100 m/s.
c) La velocidad a la que el paquete llega al suelo.

What is the mass of the same rock on the earth

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.

Ms.hidalgo opens the door to her classroom. her classroom is 60 degrees and the air outside is 80. predict what will happen using your knowledge of how heat flows.