Two tuning forks are played at the same time. one has a frequency of 176 hz and the other is 178 hz. how many beats per second are heard? 176 178 2 4

double the distance = divide strength by 4

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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