Water flows over Victoria Falls, which is 128 m high, at an average rate of 1.39 × 106 kg/s. The acceleration of gravity is 9.81 m/s 2 . If half the potential energy of this water were converted into electric energy, how much power would be produced by these falls? Answer in units of MW.
Potential energy of water is
Power is the rate at which the work is done ,
Given that, Height from where water falls is
Rate at water falls in time is
Half of the potential energy is converted into electric energy,
Power produced by water falls is
Water flows over Victoria Falls, which is 128 m high, at an average rate of 1.39...
Water flows over a section of Niagara Falls at the rate of 14.0 106 kg/s and falls 52 m. How much power is generated by the falling water?____MW
The great, gray-green, greasy Zambezi River flows over Victoria Falls in south central Africa. The falls are approximately 107 m high. If the river is flowing horizontally at 3.70 m/s just before going over the falls, what is the speed of the water when it hits the bottom? Assume the water is in free fall as it drops. HW 4.4 Problem Solving 4.84 7 of 7 Constants PartA The great, gray green, greasy Zambezi River flows over Victoria Falls in...
(c) Consider a 135 meter high waterfall. If the decrease in potential energy of the water (i.e., mgh) is totally converted into heat, calculate the temperature difference between the top and bottom of the waterfall. Data: m-mass, g - acceleration due to gravity = 9.81 m/s. The specific heat of water = 4.184 J/(8 °C).
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Water flows over a section of a waterfall at the rate of 2.5 ✕ 104 kg/s and falls 27 m. How much power is generated by the falling water? watts
Approximately 2.1 x 105 kg of water falls 14 m over a waterfall each second. (a) What is the decrease in the gravitational potential energy of the water-Earth system each second? (b) If all this energy could be converted to electrical energy (it cannot be), at what rate would electrical energy be supplied? (The mass of 1 m3 of water is 1000 kg.) (c) If the electrical energy were sold at 1.7 cent/kW·h, what would be the yearly income in...
In a small dam, water flows at a rate of 2500 kg/s and falls 30 m. After calculating the power wasted by the waterfall, how many 75 W light bulbs can be lit by this power? A)7350 bulbs B)75000 bulbs C)9800 bulbs D)2940 bulbs
A dam collects water at a height of 300m. The water can be let down through a pipe. As it falls to the ground it loses potential energy but it gains kinetic energy. 100 tonnes (note 1 tonne 1000 kg) of water are let out from the dam and reach the ground, 300m below; all the gained kinetic energy is then harnessed by a perfectly efficient turbine and converted into energy to power houses in the valley. The Bureau of...
The vertical drop of water in a hydroelectric power plant is 155m (See figure below). Water flows through the plant and into the lower river at the rate of 425m/s. Assume the overall efficiency of the plant as 80%. Density of water d is equal to 1000kg/m3 Acceleration due to gravity g is equal to 9.81m/s2. Ignore the viscous losses in the flowing water. Dam Water Reservoir Hm Turbine Generator River Figure: Schematic diagram of the hydroelectric power plant (a)...
#1.(30pts, 15 pts each) (g) Consider a 135 meter high waterfall. If the decrease in potential energy of the water (i.e., mgh) is totally converted into heat, calculate the temperature difference between the top and bottom of the waterfall. Data: m = mass, g = acceleration due to gravity 9.81 m/s". The specific heat of water 4.184 J/(0°C). (h) If a system absorbs 30.0 J of heat from the surroundings, and if it also decreases its internal energy by 33...