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1. |
When the Reynolds number is greater than 1.9 but less than 500, the coefficient of drag CD is? |
A. | CD = 24/R |
B. | CD = R/24 |
C. | CD = 18.5/R0.6 |
D. | CD = R0.6/18.5 |
Answer» D. CD = R0.6/18.5 | |