The pressure indicated by the U-tube...

Question 1 / 270705eccefa5bacbc34ba4d4874b

Question 1 of 270705eccefa5bacbc34ba4d4874b

The pressure indicated by the U-tube manometer shown in the illustration is equal to __________. See illustration GS-0115.

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Question 1 of 27070

The pressure indicated by the U-tube manometer shown in the illustration is equal to __________. See illustration GS-0115.

If the question has a related picture, it will appear here.

🔍 Key Concepts

• How a U-tube manometer measures pressure as the difference in height between the two liquid columns • How to decide if the pressure is positive or negative by seeing which leg (the one connected to pressure or the one open to atmosphere) has the lower liquid level • Remember that the reading is in inches of water (in. H₂O), not from one surface to the bottom but surface to surface

💭 Think About

• Look at the exact water levels on both sides: by how many inches are they different on the scale? • If the side connected to the pressure source is pushed down compared with the atmospheric side, does that mean the applied pressure is greater or less than atmospheric? • Imagine the tube with no pressure difference (both sides at atmospheric). Where would the levels be, and how would they shift when you apply a higher or lower pressure on the left side?

✅ Before You Answer

• Measure the vertical distance between the two liquid surfaces using the ruler, not the distance from the bottom of the U • Determine which side is connected to the pressure source and which side is open to atmosphere • Decide the sign: if the pressure side’s liquid level is lower, the pressure is above atmospheric (positive); if it is higher, the pressure is below atmospheric (negative)

Question 1 of 27070

The pressure indicated by the U-tube manometer shown in the illustration is equal to __________. See illustration GS-0115.

-2 inches of water

+2 inches of water

-4 inches of water

+4 inches of water

Question 1 / 270705eccefa5bacbc34ba4d4874b

Question 1 of 270705eccefa5bacbc34ba4d4874b

The pressure indicated by the U-tube manometer shown in the illustration is equal to __________. See illustration GS-0115.

Back

Question 1 of 27070

The pressure indicated by the U-tube manometer shown in the illustration is equal to __________. See illustration GS-0115.

If the question has a related picture, it will appear here.