Answer:
4.7433 m/sec
Step-by-step explanation:
Given data
the internal diameter of garden =2.5 cm =0.025 m
radius [tex]r_1[/tex]= 0.0125 m
it contains 28 holes each of diameter 0.20 cm =0.002 m
radius [tex]r_2[/tex] =0.001 m
from continuity equation
[tex]A_1V_1=nA_2V_2[/tex]
where A is area and V is velocity
0.85×[tex]A_1[/tex]=28 ×[tex]A_2[/tex]×[tex]V_2[/tex]
[tex]V_2=\frac{A_1}{28A_2}\times V_1=\frac{r_1^2}{28r_2^2}\times 0.85=4.7433 m/sec[/tex]
