Answer:
From the physical properties of chemical compounds in texts,
We have surface tension, σ =6.3 × 10−2 N/m, density, ρ=1260 kg/m3
given
v = 0.40m/s
h=3mm=0.003m
g=9.81m/s2
a) Froude Number, = v/
Fr = 0.4/√(9.81x0.003) = 2.33
b) Weber Number, We = ρv²h/σ
We = 1260 x 0.4²x 0.003/6.3 × 10⁻² = 9.6