Question

Water (density = 1.0 × 103 kg/m3) flows through a horizontal tapered pipe. At the wide end its speed is 4.0m/s and at the narrow end it is 5.0 m/s. The difference is pressure between the two ends is:

Answer 1

P + (1/2)(density)V^2
is the same for both ends

P1 - P2 = (1/2)(density)(V2^2 - V1^2))