Question

The resistance that develops parallel to flow is termed

lift

laminarity

drag

turbulence

viscosity

The speed at which laminar flow becomes turbulent is referred to as

peak velocity

optimal velocity

critical velocity

general velocity

essential velocity

Arteriosclerosis refers to plaque buildup on arterial walls.

True

False

A cyclist wears an aerodynamic helmet to reduce _____ drag, and hunches/bends forward to reduce _____ drag.

shape, wave

wave, form

shape, surface

form, shape

surface, form

Which of the following principles/effects would be most involved in the takeoff and landing of an airplane?

Bernoulli's

Gyration

Magnus

Newton's

Archimedes

Answer 1

1) C. Drag

Drag force is a form of mechanical resistance force generated by the interaction and contact of a solid body with a fluid (liquid or gas).  drag to be generated, the solid body must be in contact with the fluid and relative motion between the two. It acts opposite and parallel to the direction of the oncoming flow velocity.

2) C. Critical velocity

The speed at which laminar flow becomes turbulent is referred to as critical velocity. critical velocity depends on multiple variables like Reynolds number, Diameter of the vessel, viscosity of the fluid and its density which characterizes the flow of the liquid through a tube as either laminar or turbulent.

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