posted by john .
Water flows through a 4.0-cm-diameler horizontal pipe ata speed uf 1.3 m/s. The pipe then narrows down to a diameter of 2.0 cm. Ignoring viscosity, what is the pressure difference between the wide and narrow sections of the pipe
figure the flow in the smaller pipe using the law of continuinty
then, having the two speeds, use bernouli's equation to find pressure.