阿摩線上測驗
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阿摩線上測驗
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1. A simple relationship of particle fall velocity 
has been proposed as
where d = 
; Δ=(
＜-ρ)/ρ; 
=density of particles; ρ=density of fluid; g = gravitational acceleration; v=a coefficient representative of fluid; and d=diameter of particles. Determine the dimension of d and v.