Question 15
PressureIn the diagram above, if the atmospheric pressure is 760mm, the pressure in the chamber G is
- A.660mm
- B.690mm
- C.830mm
- D.860mm
Show the answer and explanation
Answer: C (830mm)
Explanation
The open arm's level is 10 − 3 = 7 cm = 70 mm higher than the level on the gas side, so the gas pressure is above atmospheric: 760 + 70 = 830 mm.