why does an ideal fluid move faster through a pipe with decreasing diameter?
a. the pressure within the fluid increases
b. the pressure within the fluid decreases
c. the pipe exerts more pressure on the fluid
d. the fluid moves downhill
What is your thinking? You are dealing with the law of continuity.
Frankly, the wording on answers a and b are just plain lousy. So assume it means the pressure difference between the ends of the pipe is either increasing or decreasing.
What makes fluid flow faster?
i'm looking in my book and i cant find exactly what i need...i'm guessing B?
You guessed wrong. Answer the question: what make fluid flow faster?
the pressure in the fluid is related to the speed of flow
C?
First of all, there IS no ideal fluid. For a given pressure drop across a pipe, the flow will be SLOWER if the diameter is less.
What this problem should have asked is FOR A GIVEN VOLUME FLOW RATE, how does diameter affect velocity.
None of the choices are correct. The assumption is also not correct. From a given reservoir, the fluid velocity from any size hole in the bottom will be the same.
drwls, quite frankly, that dosnt help anoyone.
The correct answer is c. the pipe exerts more pressure on the fluid.
An ideal fluid refers to a theoretical fluid that has no viscosity (internal friction). When an ideal fluid flows through a pipe with decreasing diameter, a phenomenon called the Venturi effect occurs. The Venturi effect states that as the cross-sectional area of the pipe decreases, the fluid's velocity increases.
To understand why this happens, consider the principles of conservation of mass and conservation of energy. According to the conservation of mass, the mass flow rate of a fluid must remain constant. Since the diameter of the pipe narrows, a smaller cross-sectional area results in a larger fluid velocity to maintain the constant mass flow rate.
Now, let's consider the conservation of energy. As the fluid enters a narrower region of the pipe, the decrease in cross-sectional area causes the velocity to increase. According to Bernoulli's principle, a fundamental equation in fluid dynamics, as the fluid's velocity increases, its pressure decreases.
This decrease in pressure occurs because the faster-moving fluid particles exert less force on the surrounding particles, causing a lower average pressure. As a result, the pipe exerts more pressure on the fluid to maintain the constant flow rate, forcing it to move faster through the narrower section.
Therefore, the correct answer is c. the pipe exerts more pressure on the fluid.