R - Giulio Raganelli homepage
R - Giulio Raganelli homepage
R - Giulio Raganelli homepage
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Quale sarà la probabilità che<br />
l’elettrone urti la molecola?<br />
π S molecola<br />
l 2<br />
<br />
( 1.5 ) ⋅10−10<br />
2<br />
3.5 ⋅10 −9 ( )<br />
2 ≈ 1.8 ⋅10−3<br />
Quanti cubetti occorrerà impilare per avere oscurata metà<br />
dell’area superficiale?<br />
1<br />
2 = π ⋅η η = 1<br />
2π<br />
= 270<br />
λ = η ⋅ l 270 ⋅ 3.5 ⋅10−9 m ≈ 10 −6 m