Question
Physics Question on Viscosity
The coefficient of viscosity for hot air is
A
greater than the coefficient of viscosity for cold air
B
smaller than the coefficient of viscosity for cold air
C
same as the coefficient of viscosity for cold air
D
increase or decrease depending on the external pressure
Answer
greater than the coefficient of viscosity for cold air
Explanation
Solution
Cold air is significantly more viscous, but the viscosity of air is so low that you'd really never notice it anyway. Hot air feels more viscous, it's probably because hot air tends to have more water vapor in it, and humid air tends to feel thicker.