# Coefficient of discharge

1. Feb 26, 2016

### werson tan

1. The problem statement, all variables and given/known data
why the author consider the coefficient of discharge as the z here ? what is exactly coefficient of discharge?

2. Relevant equations

3. The attempt at a solution

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2. Feb 26, 2016

### BvU

1. He doesn't . $\Delta z$ happens to be 0.61 m here. You can check: it has a dimension. C has not. (*
)
(*) the author is rather sloppy with dimensions. $\rho_0$ has a dimension too.