Is it correct to say that the majority of the world's electrical demands are met with hydro-electric generators? Explain why or why not

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

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.

80cm/s.

24cm/s.

53.3cm/s.