Una persona, en trayectoria rectilínea, camina 1 min a 1,26 m/s y después corre durante 1 min a 3,05 m/s. calcule la rapidez media de todo el recorrido.

If this plastic cup is heated to its melting point, what will eventually happen to all the particles in the plastic? a. the particles will begin to move enough that they slide past each other. b. bonds will form and the liquid will become a solid. c. the spaces between the particles will get smaller. d. the particles will change state and become a crystalline solid.

Answer asap! the weather patterns on earth are shown in this image. explain why there are convection currents; why there are hotter and colder parts of earth.

Most energy in an ecosystem comes originally from_