Question

a hose pipe of cross section area 2 cm² delivers 1500 litres of water in 5 minutes. What us the speed of water in m/s through the pipe?

Answer 1

See the attachment for detail solution
Hope it will help you

Answer 2

Answer:

25 m/s

Step-by-step explanation:

Cross section area = $2 cm^2$

$1cm^2=\frac{1}{10^4} m^2$

So, cross section of area in sq.m. = $2 \times 10^{-4} m^2$

Rate of flow = $\frac{1500}{5}L/m$

1L = $\frac{1}{1000}m^3$

1 min = 60 second

Rate of flow = $\frac{1500 \times \frac{1}{1000}}{5 \times 60}m^3/s=5 \times 10^{-3}m^3/s$

Speed = Flow rate / cross section area = $\frac{5 \times 10^{-5}}{2 \times 10^{-4}}=25m/s$

Hence  the speed of water is 25 m/s