of waterfalls with a height of more than 50 m , niagara falls in canada has the highest flow rate of any waterfall in the world. the total average flow rate of the falls is 2.80×103 m3/s and its average height is 52.0 m (niagara falls live, 2017). given that the density of water is 1.00×103 kg/m3 , calculate the average power output of niagara falls.