Discussion
Which of the following is the unit of kinemetic viscosity?
Answer: C
The unit of kinematic viscosity is the Stoke.
Kinematic viscosity is dynamic viscosity divided by density, so its dimensions are length squared per time. In SI it is m2/s; in the CGS system it is cm2/s, called the stoke, after George Stokes: 1 stoke = 10-4 m2/s.
The poise is the CGS unit of dynamic viscosity (g/cm·s), the usual trap. The pascal is the unit of pressure or stress, and the faraday is a quantity of electric charge, so neither measures viscosity.
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