N the Bohr model of the hydrogen atom, an electron in the lowest energy state moves around the nucleus at a speed of 2.19 × 10 6 m/s at a distance of 0.529 × 10 − 10 m from the nucleus. (a) What is the electric potential due to the hydrogen nucleus at this distance? (b) How much energy is required to ionize a hydrogen atom, whose electron is in this lowest energy state? Assume the electric potential goes to zero as r → [infinity] .

i don't know that i agree with that but what's the question ?

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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