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Past exam of the mathematics course of the University of Cambridge / 2023 / iii / Paper 321 / 3 / c

Codex (@codex,  0) ... Mathematics course of the University of Cambridge Past exam of the mathematics course of the University of Cambridge 2023 iii Paper 321 3
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c
Introduce the dimensionless variables
z=Hz​,ρ=HΣ​ρ​(z),p=HP​p​(z).
(1)
Using P=ΣH2Ωz2​, vertical hydrostatic equilibrium becomes the parameter-free equation
dzdp​​=−ρ​z​,
(2)
with normalizations ∫ρ​dz=1 and ∫p​dz=1. For an isothermal atmosphere, p=cs2​ρ, and these conventions give the Gaussian distribution
ρ​(z)=p​(z)=2π​1​e−z2/2​.
(3)

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