Two canals join to form a larger canal as shown in Video V10.6 and Fig. P10.44. Each of...

Two canals join to form a larger canal as shown in Video V10.6 and Fig. P10.44. Each of the three rectangular canals is lined with the same material and has the same bottom slope. The water depth in each is to be 2 m. Determine the width of the merged canal, b. Explain physically (i.e., without using any equations) why it is expected that the width of the merged canal is less than the combined widths of the two original canals (i.e., b < 4 m + 8 m = 12 m).