A Liquid, Such as Water, with a Low but Not

question 20

Multiple Choice

A liquid, such as water, with a low but not negligible viscosity is flowing from A to C with no turbulence through the horizontal tube, as shown in the figure. The cross-sectional area at A is equal to that at C. Which of the following is observed?

• A) The pressure at A is the same as the pressure at C, and this pressure is smaller than the pressure at B.
• B) The pressure at A is somewhat larger than that at C, and the pressures at both A and C are larger than the pressure at B.
• C) The pressures at A and C are the same, and this pressure is larger than the pressure at B.
• D) The pressure at A is larger than the pressure at B, which is larger than the pressure at C.
• E) None of these is observed.

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