in Others edited by
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Water of density $1000 \text{ kg m}^{-3}$ flows in a horizontal pipe of $10 \: cm$ diameter at an average velocity of $0.5 \: m \: s^{-1}$. The following plot shows the pressure measured at various distances from the pipe entrance.

Using the data shown in the figure, the Fanning friction factor in the pipe when the flow is $\text{FULLY DEVELOPED}$ is

  1. $0.0012$
  2. $0.0074$
  3. $0.0082$
  4. $0.0106$
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