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Q. |
A U-tube manometer, attached to an air pipe, measures 20 cm of mercury. The pressure, in kPa, in the air pipe is |
A. | 42.5 |
B. | 32.4 |
C. | 26.7 |
D. | 51.3 |
E. | 38.6 |
Answer» C. 26.7 |
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