What is a key characteristic that differentiates non-Newtonian fluids from Newtonian fluids?

• Their density changes with temperature.

• Their viscosity remains constant regardless of applied stress.

• Their viscosity changes depending on the applied stress.

• They are always thicker than Newtonian fluids.

What happens to quicksand when a person steps onto it?

• It becomes more viscous, making it harder to sink.

• It becomes less viscous, causing the person to sink.

• It remains unchanged, as it is a Newtonian fluid.

• It solidifies completely, trapping the person on the surface.

What was Osborne Reynolds' significant contribution to the field of fluid mechanics?

• He invented the first practical pump for fluids.

• He discovered the principle of buoyancy.

• He identified two main types of fluid flow: laminar and turbulent.

• He developed the formula for calculating fluid density.

What does a Reynolds number lower than 2100 typically indicate about fluid flow in a pipe?

• Turbulent flow

• Transitional flow

• Laminar flow

• Chaotic flow