Una pelota pegada de una cuerda gira en círculos a rapidez constante, describiendo 30 revoluciones en 15 segundos ¿Cuáles son la frecuencia y el periodo de este movimiento? *

its a 5.5 n

glad that

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.