A Pressurized Cylindrical Tank, 5 $13 \mathrm {~m} / \mathrm { s }$

Multiple Choice

A pressurized cylindrical tank, 5.0 m in diameter, contains water that emerges from the pipe at point C with a speed of $13 \mathrm {~m} / \mathrm { s }$ as shown in the figure. Point A is 10 m above point B and point C is 3.0 m above point B. The area of the pipe at point B is $0.080 \mathrm {~m} ^ { 2 }$ and the pipe narrows to an area of $0.040 \mathrm {~m} ^ { 2 }$ at point C. Assume that the water is an ideal fluid in laminar flow. The density of water is 1000 kg/m³ The mass flow rate in the pipe is closest to

A) 520 Kg/s.
B) 470 Kg/s.
C) 420 Kg/s.
D) 360 Kg/s.
E) 310 Kg/s.