Physics

Problem

Water flows through a horizontal pipe whose cross-sectional areas are

A_1 = 4.0\text{ cm}^2

at section 1 and

A_2 = 1.0\text{ cm}^2

at section 2. The speed of water at section 1 is

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

and the pressure there is

3.0\times10^{5}\,\text{Pa}

. Calculate the pressure at section 2. (Given: density of water

\rho = 1000\,\text{kg}\,\text{m}^{-3}

)