Calculate the critical tractive stress if the median diameter of the

1.	Calculate the critical tractive stress if the median diameter of the sand bed is 1.0 mm.
A.	0.53 N/m2
B.	0.61 N/m2
C.	0.73 N/m2
D.	1.61 N/m2
Answer» B. 0.61 N/m2

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Calculate the critical tractive stress if the median diameter of the sand bed is 1.0 mm.

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