20.3. Application of Linear Momentum Equations

Try these first

1. 1.

   What is momentum?

   Hint

   Think about how objects move.

2. 2.

   What do streamlines represent in fluid flow?

   Hint

   Consider visualizing water flow.

3. 3.

   What is the primary purpose of a valve in a fluid system?

   • To completely stop flow
   • To regulate flow
   • To increase fluid velocity

   Hint

   Think about what you do with a faucet.

4. 4.

   Bernoulli's equation applies to what kind of flow?

   • True
   • False

   Hint

   Consider the conditions for its application.

5. 5.

   A pipeline system has a length of 500 m, diameter of 0.1 m, and a pressure loss of 200 kPa due to fittings. Using Bernoulli’s principle, calculate the flow velocity at the outlet.

   Hint

   Identify the energy terms and solve for velocity.

6. 6.

   You have a valve causing an energy loss of 150 J/kg in a fluid system. If the fluid density is 1000 kg/m³, what is the flow speed after passing through the valve?

   Hint

   Recall how we relate energy to velocity.