The figure shows a horizontal pipe with a circular cross section whose diameter varies. The cross-sectional area at X is 3.0×10−4 m2 and at Y is 0.60×10−4 m2. Water of density 1000 kg/m3 fills the pipe and flows through it at a constant rate of 2.4×10−4 m3/s. The difference in pressure between X and Y is most nearly