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physics

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why does an ideal fluid move faster through a pipe with decreasing diameter?

a. the pressure within the fluid increases
b. the pressure within the fluid decreases
c. the pipe exerts more pressure on the fluid
d. the fluid moves downhill

C?
the pressure in a fluid is related to the speed of flow

  • physics - ,

    Lord no. The fluid increases its speed because the constriction at the pipe inlet rasises pressure, so the pressure difference between the inlet and outlet is greater. Force makes things move, and if they are moving faster, it takes greater force, hence, greater pressure.

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