5. A large tank is filled with water to a depth of 15 m. A spout located 10.0 m above the bottom of the tank is then opened as shown in the drawing. With what speed will water emerge from the spout?
A) 3.1 m/s
B) 9.9 m/s
C) 14 m/s
D) 17 m/s
E) 31 m/s
6. 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, PB - PA, 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