A balloon is made of a material of surface tension S and its inflation outlet (from where gas is filled in it) has small area A. It is filled with a gas of density ρ and takes a spherical shape of radius R. When the gas is allowed to flow freely out of it, its radius changes from R to 0 (zero) in time T. If the speed η(r) of gas coming out of the balloon depends on r as rα and T∝SαAβργRδ then
Held on 30 Apr 2025 · Verified 9 Jul 2026.
a=21,α=21,β=−1,γ=+1,δ=23
a=−21,α=−21,β=−1,γ=−21,δ=25
a=−21,α=−21,β=−1,γ=21,δ=27
a=21,α=21,β=−21,γ=21,δ=27
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