(Solved): Explain how we get the answer Water flows through the pipe shown in the diagram below. The cross-sec ...

Water flows through the pipe shown in the diagram below. The cross-sectional area at point 1 is twice the cross-sectional area at point 2 . If the pressure difference between points 1 and $2,P_1?P_2$, is $6\mathrm{kPa}$, what is the velocity at point 1 , i.e., $v_1$ $($ in ${\mathrm{ms}}^{?1})?$ [The density of water is $10^3\mathrm{kg}{\mathrm{m}}^{?3}$.]