Problem 4. In a U-tube (Fig. 3) there is some water and on top of the...

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Problem 4. In a U-tube (Fig. 3) there is some water and on top of the water in one of the tubes there is oil (water and oil don't mix). Find the density of the oil. (Hint: What can you say about the pressure at points a and b?) Oil a 27.2 cm 9.41 cm T Water Copyright 2005 Pearson Prentice Hall, Inc. Figure 3: Oil and water b Problem 4. In a U-tube (Fig. 3) there is some water and on top of the water in one of the tubes there is oil (water and oil don't mix). Find the density of the oil. (Hint: What can you say about the pressure at points a and b?) Oil a 27.2 cm 9.41 cm T Water Copyright 2005 Pearson Prentice Hall, Inc. Figure 3: Oil and water b