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Q. |
What pressure differential, in pascals, exists at the bottom of a 3 m vertical wall if the temperature inside is 20?C and outside it is -20?C. Assume equal pressures at the top |
A. | 3 |
B. | 15 |
C. | 6 |
D. | 9 |
E. | 12 |
Answer» C. 6 |
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