can someone check this for me?
weber number = density*velocity^2*length/surface tension
find dimensions of surface tension.
density= ML-3
speed = [LT-1]^2
Length = L
so
[ML^-3]*[LT^-1]^2*[L]
= MLT
So for weber number to be dimensionless the surface tension has to cancel out MLT and therefore also has dimensions MLT.