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Water is flowing through a long horizont...

Water is flowing through a long horizontal tube. Let `P_A and P_B` be the pressures at two points A and B of the tube

A

The pressures at A and B are equal for any shape of the tube

B

the pressure are never equal

C

the pressure are equal even if the tube has a uniform cross section

D

the pressures may be equal even if the tube has a nonuniform cross section.

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The correct Answer is:
C, D
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