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1. |
A liquid flowss through two similar pipes 1 and 2. If the ratio of their flow velocities v1 : v2 be 2:3, what will be the ratio of the head loss in the two pipes?$ |
A. | 3:2 |
B. | 9:4 |
C. | 2:3 |
D. | 4:9 |
Answer» E. | |