Chapter 11 Fluids.

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Presentation transcript:

Chapter 11 Fluids

11.8 The Equation of Continuity The mass of fluid per second that flows through a tube is called the mass flow rate.

11.8 The Equation of Continuity

11.8 The Equation of Continuity The mass flow rate has the same value at every position along a tube that has a single entry and a single exit for fluid flow. SI Unit of Mass Flow Rate: kg/s

11.8 The Equation of Continuity Incompressible fluid: Volume flow rate Q:

11.8 The Equation of Continuity Example 12 A Garden Hose A garden hose has an unobstructed opening with a cross sectional area of 2.85x10-4m2. It fills a bucket with a volume of 8.00x10-3m3 in 30 seconds. Find the speed of the water that leaves the hose through (a) the unobstructed opening and (b) an obstructed opening with half as much area.

11.8 The Equation of Continuity (b)