Water flows over a section of Niagara Falls at a rate of 2.3 x 106 kg/s and falls 55 m.
What is the power wasted by the waterfall?
The acceleration due to gravity is 9.8 m/s2.
Answer in units of W.

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You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. naturally, you remove it to a safer place. but before you do, you observe it as it moves from position xi = -92.9 cm to position xf = -64.9 cm along the rail, as measured from a point where one rail abuts the next. what is the snail\'s displacement δx in centimeters?

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