11. How much power does a machine have it it does 100J of work in 20 seconds?

Please show work

5 W

Explanation:

Power = Work Done ÷ Time taken

= 100 ÷ 20

= 5 W

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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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