The Equation of Continuity is
A1 v1 = A2 v2 or
An vn = AW vW For a circular cross section, A = r2 or A = (d/2)2 or A = d2 / 4
[ (3.5 cm)2 / 4 ] vn = [ (5.5 cm)2 / 4 ] [2.5 m/s] vn = [ (5.5 cm)2 / 4 ] [2.5 m/s] / [ (3.5 cm)2 / 4 ]
vn = [ (5.5 )2] [2.5 m/s] / [ (3.5)2 ]
vn = [ (5.5 )2/(3.5)2] [2.5 m/s]
vn = 6.2 m/s
(c) 2000, Doug Davis; all rights reserved.