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## Homework Statement

https://projects.exeter.ac.uk/fluidflow/Courses/FluidDynamics3211-2/DimensionalAnalysis/dimensionalLecturese4.htmlaccording to this link , when we form the pi group , we need to put an exponent for the non-repeating variable ,( in this case , delta P is non-repeating variable , D , v and rho are repeating variable)

## Homework Equations

## The Attempt at a Solution

Which is correct ? the first or second one ? is exponential needed for non-repeating variable ?

P/s : this is not same as the question i posted in another thread...