Question: Part A) Water flows down a river with a velocity of 0.4 m/s. The bottom drag coefficient is 310 -3 . The riverbed is composed

Part A) Water flows down a river with a velocity of 0.4 m/s. The bottom drag coefficient is 310^-3. The riverbed is composed of 5-cm-diameter gravel, with density 2700 kg/m³. The flow...

Group of answer choices

A) is sufficient to move the gravel on the riverbed.

B) is not sufficient to move the gravel on the riverbed.

Part B) The river is carrying coarse silt in suspension, with settling velocity of 3 mm/s. The silt...

Group of answer choices

a) will soon fall out of suspension and settle on the bed.

b) will remain in suspension.

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