Achild is playing at the beach. she pours an equal amount of sand into both a short, fat container and a tall, thin container. when asked which container holds more sand, the child points to the tall, thin container. this response suggests that she is most likely in the stage of cognitive development.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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the maxium height is 34m/s