Which of the following statements are correct? 
1) Depression of mercury in a capillary tube is dependent on density and surface tension. 
2) Modelling of flow-induced drag on a ship is done invoking both of Froude number 30. and Reynolds number. 
3) Flow of a fluid in a narrow pipe is relatable to both Reynolds number and Cauchy number. 
4) Formation and collapse of a soap bubble is analyzed through employing surface tension and external pressure. 
5) Flow over the downstream slope of an ogee spillway can be affected by surface tension. 
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