Question

The cylinder tube of a spray pump has a radius R , one end of which has n fine holes each of radius r . If the speed of flow of the liquid in the tube is v , the speed of ejection through the hole is

Answer 1

This is an imcomplete

Answer 2

question

Answer 3

No this is a complete question

Answer 4

theres no values? what are the answers

Answer 5

is this the question?
http://screencast.com/t/v0DOiF2SjhM

Answer 6

V/n[R/r]^2

Answer 7

use continuity

\(\Large V_{tube} = \pi R^2l\)
\(\Large \dot V_{tube} = \pi R^2 \dot l = \pi R^2 v \)
\(\Large = n \times \pi r^2 \tilde v\), ie due to continuity, flow through holes must be same
\(\Large \tilde v = \dfrac{\pi R^2 v}{ n \pi r^2} = \dfrac{v}{ n}. \dfrac{ R^2 }{ r^2}\)