Bernoulli's Principle

According to equation of continuity, A₁V₁ = A₂V₂ = constant. The constant is equal to:

• Flow rate, R

• Volume of fluid, V

• Mass of fluid, m

• Density of fluid, ρ

According to Bernoulli's Principle, when the wind speed is high, wind pressure is ________

• High

• Low

• Not enough information

• None of the above

A fluid is forced through a pipe of changing cross section as shown. In which section will the water move the slowest?

• I

• II

• III

• IV

• The water will move at the same speed

A fluid is forced through a pipe of changing cross section as shown. In which section will the water have the highest pressure?

• I

• II

• III

• IV

• The water pressure will remain the same

A particle of a fluid is marked as it moves a horizontal streamline through a pipe, as shown in the figure. Region II (2) is half of the diameter of Region I (1).

Which of the following is true?

• P₁ > P₂

• P₁ < P₂

• P₁ = P₂

• not enough information to solve

A piece of an ideal fluid is marked as it moves a horizontal streamline through a pipe, as shown in the figure. Region II (2) is half of the diameter of Region I (1).

Which of the following is true?

• v₁ > v₂

• v₁ < v₂

• v₁ = v₂

• not enough information to solve

A piece of an ideal fluid is marked as it moves a horizontal streamline trough a pipe, as shown in the figure. Region II (2) is half of the diameter of Region I (1).

Which of the following is true?

• R₁ > R₂

• R₁ < R₂

• R₁ = R₂

• not enough information to solve

The pipe changes height from y₁ = 2 m to y₂ = 3 m. Area₁ = Area₂.

Which of the following is true?

Hint: think Potential Energy and Kinetic Energy and remember that PE = mgh

• P₁ > P₂

• P₁ < P₂

• P₁ = P₂

• not enough information to solve

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

The pipe changes height from y₁ = 2 m to y₂ = 3 m. Area₁ = Area₂.

Which of the following is true?

• R₁ > R₂

• R₁ < R₂

• R₁ = R₂

• not enough information to solve

Which of the following statements is INCORRECT?

Narrowing a fluid's path will speed it up if ...

• the fluid has uniform density

• the fluid is non-compressible

• the flow is laminar (non-turbulent)

• the flow is turbulent