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. average power output:   W

A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 m/s² for g. Use 1000 kg/m³ as the weight density of water.) |--4m+ W = 3 m † 4 m ↓ 9 m

A water intake at a pump storage reservoir (see the figure below) has a cross-sectional area of 0.637 m². The water flows in at a speed of 0.470 m/s. At the generator building, at distance D = 156 m below the intake point, the cross-sectional area is smaller than at the intake and the water flows out at 9.44 m/s. What is the difference in pressure between inlet and outlet? Reservoir Number 202.6 Units D Intake MPa Generator building Outlet-

The left ventricle of a resting adult's heart pumps blood at a flow rate of 87.0 cm3/s, increasing its pressure by 110 mm Hg, its velocity from zero to 25.0 cm/s, and its height by 5.00 cm. (All numbers are averaged over the entire heartbeat.) Calculate the total power output of the left ventricle. Note that most of the power is used to increase blood pressure. Additional Materials O Reading