How much effort will be required on the small piston having cross sectional area 20 square cm to lift a load of 4000 N on large piston having cross sectional area 1 square meter. Also calculate pressure exerted on small piston ​

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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i'm on my way to history not a mistory.

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