3.1.2. Recap of Previous Lecture

Try these first

1. 1.

   What is a fluid?

   Hint

   Think about substances like water and air.

2. 2.

   Define laminar flow.

   Hint

   Consider a slow-moving river.

3. 3.

   What does the no-slip condition describe?

   • The fluid has zero velocity at the solid boundary
   • The fluid flows freely without resistance
   • The fluid density remains constant

   Hint

   Think about the fluid's interaction with solid surfaces.

4. 4.

   True or False: Shear stress increases with the velocity gradient according to Newton's laws of viscosity.

   • True
   • False

   Hint

   Think about how substances resist motion.

5. 5.

   A cylindrical pipe has water flowing through it with a diameter of 0.1 m. If the velocity of water is 2 m/s, calculate the flow rate of the water.

   Hint

   Use the formula for cross-sectional area.

6. 6.

   If we have a fluid with a specific gravity of 1.5 and the density of water is 1000 kg/m³, what is the density of the fluid?

   Hint

   Recall the formula for specific gravity.