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College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

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Chapter
Section
BuyFindarrow_forward

College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

What is the difference between flow rate and fluid velocity? How are they related?

To determine

The difference between flow rate and fluid velocity along with its relation

Answer

Flow rate is given by

  Q=Vt

Fluid velocity is given by

  v=dt

Explanation

Introduction: Flow rate

can also be defined as volume flow rate, it is a scalar quantity.

Fluid velocity

is a vector quantity.

Flow rate

Q is defined as volume of fluid V passes through cross section A per unit time t.

Mathematically it is given by equation,

  Q=Vt

SI unit -

m3s

CGS unit -

cm3s

Fluid velocity

vis defined as distance travelled by fluid d in certain interval of time t.

Mathematically it is given by equation,

  v=dt

SI unit -

ms

CGS unit -

cms

Relation between Flow rate & Fluid velocity Flow rate can be given as

  Q=Vt

  =Adt=Av

   Flow rate = Area of cross section x Fluid velocity.

Conclusion:

The greater the velocity of flow, greater the flow rate.

Flow rate is given by

  Q=Vt

Fluid velocity is given by

  v=dt

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