Biophysics Lec 3

A liquid with a high viscosity will

• Flow more easily
• Have lower internal friction
• Flow more slowly
• Experience less resistance

What are the four main characteristics of an ideal fluid

Mention difference between laminar flow and turbulent flow

Enumerate 3 terms of Bernoulli's equation

Water is flowing through a horizontal pipe. At one point, the pipe has a cross-sectional area of 0.1 m², and the water velocity is 3 m/s. At another point, the pipe narrows to 0.05 m². Find the velocity of water in the narrower section

• 10m/s
• 6m/s
• 5m/s
• 8m/s

Viscous friction is proportional to the velocity of the flow, viscous friction is inversely proportional to the coefficient of viscosity

• First statement is true, second statement is false
• First statement is false, second statement is true
• Both statements are true
• Both statements are false

Velocity is highest at center and increase towards the wall

• True
• False

Viscosity decrease as the fluid becomes colder

• True
• False

Which of the following is not a characteristic of an ideal fluid?

• Steady
• Incompressible
• Viscous
• Irrotational

What happens to the velocity of a fluid when it moves through a narrower section of a pipe ?

• It decreases
• It remains constant
• It increases
• It stops flowing