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H-3 (Application on First Law) Water flows over a waterfall 100 m in height (Fig 3.2). Take 1 kg of the water as the system, and assume that it does not exchange energy with its surroundings. (a) What is the potential energy of the water at the top of the falls with respect to the basis of the falls? (b) What is the kinetic energy of the water just before it strikes bottom? (c) After the 1 kg of water inter to the river below the falls, what change has occurred in its state? 1001 Ex1-0 AU- Timo Om Ex:=? Figure.3.2: Sketch of problem H-1