 
			 
			MCQOPTIONS
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				| 1. | Express the time-scale ratio in terms of Reynolds number (Re). | 
| A. | Re<sup>-1/4</sup> | 
| B. | Re<sup>3/4</sup> | 
| C. | Re<sup>-1/2</sup> | 
| D. | Re<sup>1/2</sup> | 
| Answer» D. Re<sup>1/2</sup> | |