Question: (a) Two dams form artificial lakes of equal depth. How-ever, one lake backs up 15 km behind the dam, and the other backs up 50

(a) Two dams form artificial lakes of equal depth. How-ever, one lake backs up 15 km behind the dam, and the other backs up 50 km behind. What effect does the difference in length have on the pressures on the dams?
(b) Dams are usually thicker at the bottom. Why?

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