Physics

Problem

A horizontal water pipeline consists of three successive circular sections of diameters

5\,\text{cm}

8\,\text{cm}

and

2.5\,\text{cm}

respectively. The speed of water in the first section is

3.0\,\text{m\,s}^{-1}

. a. (i) Calculate the speeds of water in the second and third sections. b. (ii) The outlet of the third section is used to fill a

200\,\text{L}

container. Estimate the time required to fill the container completely.