A fountain sends a stream of water straight up into the air to a maximum height of 4.21 m. The effective area of the pipe feeding the fountain is 4.07 x 104 m². Neglecting air resistance and any viscous effects, determine how many gallons per minute are being used by the fountain. (1 gal = 3.79 x 10³ m³) Number Units

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The second image shows how I worked it out. I'm suspecting I miscalculated on very last step. Please help me see where I'm missing this one. Thanks 

 

 

 

 

A fountain sends a stream of water straight up into the air to a maximum height of 4.21 m. The effective area of the pipe feeding the fountain is 4.07 x 10^-4 m². Neglecting air resistance and any viscous effects, determine how many gallons per minute are being used by the fountain. (1 gal = 3.79 x 10^-3 m³)

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Transcribed Image Text:A fountain sends a stream of water straight up into the air to a maximum height of 4.21 m. The effective area of the pipe feeding the fountain is 4.07 x 10^-4 m². Neglecting air resistance and any viscous effects, determine how many gallons per minute are being used by the fountain. (1 gal = 3.79 x 10^-3 m³) Number: [Text box for input] Units: [Dropdown menu for selection]
**Given Data:**

- The maximum height of the water is: \( H = 4.21 \, \text{m} \)
- The cross-sectional area of the pipe is: \( A = 4.07 \times 10^{-4} \, \text{m}^2 \)

The expression for the velocity to attain the maximum height is given by:

\( V = \sqrt{2gh} \)

Substitute the value in the above equation:

\( \sqrt{2 \times 9.81 \, \text{m/s}^2 \times 4.21 \, \text{m}} = 9.088 \, \text{m/s} \)

**Step 2:**

The expression for the flow rate of the water is: \( Q = A \times V \)

Substitute the value in the above equation:

\( Q = 4.07 \times 10^{-4} \, \text{m}^2 \times 9.088 \, \text{m/s} \)

\( Q = 36.99 \times 10^{-4} \, \text{m}^3/\text{s} \times \frac{60 \, \text{s}}{1 \, \text{min}} \times \frac{1 \, \text{gal}}{3.79 \times 10^{-3} \, \text{m}^3} \)

\( Q = 585.59 \times 10^1 \, \text{gal/min} \)
Transcribed Image Text:**Given Data:** - The maximum height of the water is: \( H = 4.21 \, \text{m} \) - The cross-sectional area of the pipe is: \( A = 4.07 \times 10^{-4} \, \text{m}^2 \) The expression for the velocity to attain the maximum height is given by: \( V = \sqrt{2gh} \) Substitute the value in the above equation: \( \sqrt{2 \times 9.81 \, \text{m/s}^2 \times 4.21 \, \text{m}} = 9.088 \, \text{m/s} \) **Step 2:** The expression for the flow rate of the water is: \( Q = A \times V \) Substitute the value in the above equation: \( Q = 4.07 \times 10^{-4} \, \text{m}^2 \times 9.088 \, \text{m/s} \) \( Q = 36.99 \times 10^{-4} \, \text{m}^3/\text{s} \times \frac{60 \, \text{s}}{1 \, \text{min}} \times \frac{1 \, \text{gal}}{3.79 \times 10^{-3} \, \text{m}^3} \) \( Q = 585.59 \times 10^1 \, \text{gal/min} \)
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