Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Air at a temperature of 40∘C∘C flows through the duct at A� with a velocity of 1.9 m/sm/s . ρair�air = 1.127 kg/m3kg/m3
Determine the change in pressure between A� and B�. Account for the minor loss caused by the sudden change in diameter of the duct.
Express your answer to three significant figures and include the appropriate units.
![**Problem Statement:**
Air at a temperature of 40°C flows through the duct at point \( A \) with a velocity of 1.9 m/s. The density of air (\( \rho_{\text{air}} \)) is given as 1.127 kg/m³.
**Part A:**
Determine the change in pressure between points \( A \) and \( B \). Account for the minor loss caused by the sudden change in diameter of the duct.
Express your answer to three significant figures and include the appropriate units.
\[ p_B - p_A = \_\_\_\_ \]
Please write your value and units in the provided space. If needed, use the unit conversion buttons for assistance.
**Figure Description:**
The figure illustrates a duct with a sudden change in diameter. The duct narrows from a diameter of 300 mm at section \( B \) to 200 mm at section \( A \). Air flows from left to right through the duct, entering at section \( A \) (200 mm diameter) and exiting at section \( B \) (300 mm diameter).
**Instructions:**
- Use the principles of fluid dynamics to calculate the pressure difference.
- Consider the effects of the sudden expansion.
- Submit your answer for assessment.
If your initial answer is incorrect, you have a total of 5 attempts to input the correct value. Click "Submit" to check your answer.](https://content.bartleby.com/qna-images/question/98ba27a3-ab69-49b1-ad1c-2aa6f8226754/389a825d-8491-405c-9082-3cf1bdf18156/wj40y8r_processed.png)
Transcribed Image Text:**Problem Statement:**
Air at a temperature of 40°C flows through the duct at point \( A \) with a velocity of 1.9 m/s. The density of air (\( \rho_{\text{air}} \)) is given as 1.127 kg/m³.
**Part A:**
Determine the change in pressure between points \( A \) and \( B \). Account for the minor loss caused by the sudden change in diameter of the duct.
Express your answer to three significant figures and include the appropriate units.
\[ p_B - p_A = \_\_\_\_ \]
Please write your value and units in the provided space. If needed, use the unit conversion buttons for assistance.
**Figure Description:**
The figure illustrates a duct with a sudden change in diameter. The duct narrows from a diameter of 300 mm at section \( B \) to 200 mm at section \( A \). Air flows from left to right through the duct, entering at section \( A \) (200 mm diameter) and exiting at section \( B \) (300 mm diameter).
**Instructions:**
- Use the principles of fluid dynamics to calculate the pressure difference.
- Consider the effects of the sudden expansion.
- Submit your answer for assessment.
If your initial answer is incorrect, you have a total of 5 attempts to input the correct value. Click "Submit" to check your answer.
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