Water flows through a horizontal tube similar to that in Fig. 9.20. However in this case, the

Question:

Water flows through a horizontal tube similar to that in Fig. 9.20. However in this case, the constricted part of the tube is half the diameter of the larger part. If the water speed is in the larger parts of the tube, by how much does the pressure drop in the constricted part? Express the final answer in atmospheres.