Science and Mathematics for Engineering 6th Edition by John Bird

Exercise 11

The velocity v of water in a pipe appears in the formula: $\mathrm { h } = \frac { 0.03 \mathrm { Lv } ^ { 2 } } { 2 \mathrm { dg } }$
Evaluate $\mathrm { v }$ when $\mathrm { h } = 0.384 , \mathrm {~d} = 0.20 , \mathrm {~L} = 80$ and $\mathrm { g } = 10$ .