Calcula la fuerza de fricción que mantiene a una persona de 75 kg sentada en la orilla de una plataforma giratoria horizontal, cuando la persona se encuentra a 2 m del
centro de la plataforma y tiene una rapidez tangencial de 3 m/s. Ahora calcula el
momento angular.

Need in all of themmm only answer if you know pls

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

Acombination reaction is when two or more combine to form one product. a decomposition reaction is when a substance breaks down into two or more simpler substances in a chemical reaction.