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Water flows through a horizontal pipe. The diameter of the pipe at point Bis larger than the diameter of the pipe at point A. Where is the speed of the water the greatest?

a. The speed of the water is the same at both points.
b. The speed of the water is the greatest at point A.
c. The speed of the water is the greatest at point B.
d. The speed of the water cannot be determined without additional information.

Answer :

B. It is point A , the proof is in this photo if it’s wrong please correct me

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