How Does Nozzle Size Affect Water Speed and Pressure?

In summary, we are given a garden hose with a diameter of 0.62in, water flowing at a speed of 0.52m/s, and a pressure of 1.3 atmospheres. At the end of the hose is a nozzle with a diameter of 0.21 in. We are asked to find the speed and pressure of the water at the nozzle. Using the equation v2=v1(A1/A2), we can find the speed of the water in the nozzle. However, the attempt at a solution provided is incorrect and needs to be revised.
  • #1
mandi_babe1
2
0

Homework Statement


A garden hose with a diameter of 0.62in has water flowing in it with a speed of 0.52m/s and a pressure of 1.3 atmospheres. At the end of the hose is a nozzle with a diameter of 0.21 in.
a.)Find the speed of the water in the nozzle.
b.)Find the pressure in the nozzle.


Homework Equations


v2=v1(A1/A2)


The Attempt at a Solution


100+1/2(?)1.22=50+1/2(?)v2
 
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  • #2
mandi_babe1 said:

Homework Equations


v2=v1(A1/A2)

Use this for the first part.

I also don't know what you did in your attempt.
 
  • #3
mandi_babe1 said:

Homework Statement


A garden hose with a diameter of 0.62in has water flowing in it with a speed of 0.52m/s and a pressure of 1.3 atmospheres. At the end of the hose is a nozzle with a diameter of 0.21 in.
a.)Find the speed of the water in the nozzle.
b.)Find the pressure in the nozzle.


Homework Equations


v2=v1(A1/A2)


The Attempt at a Solution


100+1/2(?)1.22=50+1/2(?)v2

There should not be any addition in your equation. As rock.freak667 suggests, use your relevant equation.
 

1. What is the relationship between speed and pressure in a nozzle?

The speed and pressure in a nozzle have an inverse relationship, meaning that as the speed increases, the pressure decreases. This is due to the Bernoulli's principle, which states that the total energy of a fluid remains constant as it flows through a nozzle.

2. How does the shape of a nozzle affect the speed and pressure?

The shape of a nozzle plays a crucial role in determining the speed and pressure of a fluid. A converging nozzle, which narrows down towards the exit, increases the speed of the fluid and decreases the pressure. On the other hand, a diverging nozzle, which widens towards the exit, decreases the speed and increases the pressure.

3. Can the speed and pressure in a nozzle be controlled?

Yes, the speed and pressure in a nozzle can be controlled by adjusting the shape and size of the nozzle. By changing the shape of the nozzle, the speed and pressure can be altered to meet the desired requirements.

4. How does the fluid's density affect the speed and pressure in a nozzle?

The density of the fluid also has an impact on the speed and pressure in a nozzle. A denser fluid will experience a larger pressure drop and higher velocity as it flows through the nozzle. This is due to the conservation of mass and energy principles.

5. What are some practical applications of understanding the speed and pressure in a nozzle?

Understanding the relationship between speed and pressure in a nozzle is crucial in various fields such as aerospace engineering, fluid dynamics, and industrial processes. It can be used to design efficient nozzles for rocket engines, increase the efficiency of fluid flow in pipelines, and optimize industrial processes that involve the use of nozzles.

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