A multi-fluid container is connected to a U-tube, as shown in Fig.P1–78. For the given specific gravities and fluid column heights, determine the gage pressure at A. Also, determine the height of a mercury column that would create the same pressure at A.

 

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A 70 cm Oil SG = 0.90 30 cm Water 90 cm Glycerin SG = 1.26 20 cm 15 cm FIGURE P1-78 A 70 cm Oil SG = 0.90 30 cm Water 90 cm Glycerin SG = 1.26 20 cm 15 cm FIGURE P1-78