Physics

Problem

Water enters a nozzle through a pipe of diameter

8\,\text{cm}

with a speed of

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

. Calculate the diameter of the nozzle exit required to obtain an exit speed of

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

. a)

5.1\,\text{cm}

3.6\,\text{cm}

7.2\,\text{cm}

1.6\,\text{cm}