The Density of the Liquid Flowing Through the Horizontal Pipe

Multiple Choice

The density of the liquid flowing through the horizontal pipe in the drawing is 1200 kg/m³. The speed of the fluid at point A is 7.5 m/s while at point B it is 11 m/s. What is the difference in pressure, P_B - P_A, between points B and A?

A) -1.9 × 10³ Pa
B) +3.8 × 10³ Pa
C) -2.5 × 10⁴ Pa
D) +5.0 × 10⁴ Pa
E) -3.9 × 10⁴ Pa