A river has an area of 280 square kilometers and study shows that the site has an average annual rainfall of 195 cm. It is proposed to install a hydraulic turbine having an efficiency of 78% connected to an electric generator with efficiency of 94%. If the site has an elevation head of 62 meters. Calculate the power that can be generated.

Q: A pumped water storage plant has a head of 600 m and volume 5 x 10° m². How much potential energy is…

A: Height of Storage tank equal to 600 metre

Q: Suppose that in one year a country produces 2.87×10112.87×1011 kilowatt‑hours (kWh)(kWh) of…

A: Given that, the value of total produce energy and number of hydroelectric plants and efficiency of…

Q: A cylindrical water tank 4 meters high with radius of 2 meters is buried so that the top of the tank…

A: Density=Mass/volume Gravitational force=mass X acceleration due to gravity=mg Work done=potential…

Q: A 60 kg mans runs up a flight of stair having rise of 4.7 m in 4 seconds. What average power must he…

A: Given data: Mass of man is, m=60 kg. Height of rise is, h=4.7 m. Time taken to rise is, t=4 s.

Q: The human heart is a powerful organ. If your heart can take in and discharge about 6773.2 liters of…

A: Given Volume of blood , V = 6773.2 L  Density of blood , D = 1.06 kg/L  Height lift ,H = 1.7 m  Time…

Q: A manual chain hoist is used to lift a 750 kg crate through a distance of 23.5 m.  A force of 425 N…

A:

Q: The power available from a wind turbine is calculated by the following equation: P==Apu where P=…

A: Write the given values of this problem. The diameter of blade(d)=380 feetradius(r)=3802 feet(r)=190…

Q: Which of the following statements is/are true? Check all that apply. The SI unit of power is the…

A: Horsepower is not the SI unit of power, the SI unit of power is the watt (the statement is False).…

Q: How much work is done to expand a 10-cm diameter cylindrical chamber at 1 atm from a length of 10 cm…

A: Hence, the work done is 79.58 J

Q: What is the potential energy of a 3.03 kg object at the bottom of a well 11.2 m deep as measured…

A:

Q: A spring with k = 15 N/m with equilibrium length 30 cm is attached vertically to a surface and then…

A:

Q: When 20 N of force is applied to a spring of natural length 2 m, the resulting compression is 0.5 m.…

A:

Q: On what basis would you classify energy sources as(a) renewable and non-renewable?(b) exhaustible…

A: (a)The energy sources which can be restored or regenerated are called renewable source of energy,…

Q: A swimming pool has the shape of a box with a base that measures 28m by 13m and a depth of 3.5m. How…

A:

Q: A 74-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops…

A:

Q: A 73-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops…

A:

Q: The water behind Hoover Dam in Nevada is 206 m higher than the Colorado River below it. At what rate…

A: Given: Height, h = 206 m Power, P = 100 MW = 100 x 106 W = 108 W  g = 9.8 m/s/s

Q: A typical muscle fiber is 2cm long and has a cross-section area of 3.1x10^-9m^2. When the muscle…

A: Work don by muscle is  W = Force × Change in length      = F × dr.

Q: Calculate the efficiency (km/L) of a car that has traveled 150 kilometers in the past 4 days, using…

A: We use the value for energy in 1 litre of gasoline in kWh. One litre of gasoline has an energy equal…

Q: Write any two practical examples of the law of conservation of energy?

A: Example 1: A simple example is dropping a cell phone on the floor. Initially the phone has…

Q: A 71.4-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then…

A:

Q: Estimate the energy density (MJ/m3) of a pumped hydro store  that is 100 m above its power station.…

A:

Q: Find the dot product of P = 2.511+ 2.33-5.47k N and Q= 2.811 +6.09j-1.12k m.

A:

Q: al energy of a river with 5m/s flow speed and 100m3/s of flow? If the leaving water still have 1m/s…

A: Givenv=5 m/sQ=100 m3/su=1 m/s

Q: A clothes dryer uses 3000 W and is run fro 1 hour. If the total useful energy to dry the clothes is…

A: Given: Power of the dryer P= 3000 W  time to use dryer = 1 hour  Total useful energy to dry the…

Q: A trough is 3 meters long, 3 meters wide, and 5 meters deep. The vertical cross-section of the…

A: When a container is emptied using pump device at constant pressure, work done is given by Work done…

Q: Calculate the gravitational potential energy of the water in a lake of volume 100 km3 (mass = 1.0 x…

A:

Q: The Grand Coulee Dam is 1270 m long and 170 m high. The electrical power output from generators at…

A: Solution: Determine the electric power produced per cubic meter of water due to potential energy.…

Q: If 60 percent of the potential energy of water flowing over a dam can be converted to electricity,…

A:

Q: A book on a shelf has potential energy of 200J and two times the mass of a book next to it. What is…

A: Given data The gravitational potential energy for the book is given as PEh = 200 J. The…

Q: A 71.6-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then…

A:

Q: When the Glen Canyon hydroelectric power plant in Arizona is running at capacity, 690 m3 of water…

A: The power is,

Q: A worker slides a block of wood along a surface. The work output is determined to be 5.85 x 103 J…

A:

Q: A coal power plant has a rated output of 150 MW and a first law efficiency of 41%. Coal has an…

A: Given information: The energy density of the coal (C) = 24 MJ/kg The power output of the power plant…

Q: car

A:

Q: Water flows over a section of Niagara Falls at a rate of 1.30 × 106 kg/s and falls 52.0 m. What is…

A: Given information: Here, (m/t) is the rate at which water falls and h is the height through which…

Q: discuss the possible solutions to our energy problems in regards to renewable energy

A: Over the last two centuries, energy needs have skyrocketed dramatically, especially because of the…

Q: Hydroelectricity is generated by storing water behind a dam, and then letting some of it run through…

A: depth, h = 100 m mass, m = 10,000 kg  density, d =  1000 kg/m3  speed, v = 2 m/s

Q: A hoisting machine lifts a 3000 kg load a height of 8 m in a time of 20 s. The power supplied to the…

A: Work = m g h  Power is the rate of doing work.  where, m is the mass, h is the height.

Q: Suppose that the average U.S. household uses 14100 kWh (kilowatt-hours) of energy in a year. If the…

A:

Q: Output of a truck is 4500 J and its efficiency is 50%, input energy provided to truck is A. 5000 J…

A: Given data :- Output energy = 4500 J efficiency  η = 50 % = 1/2

Q: A 66-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops…

A: given mass m =66kg initial speed vi=1.6 m/s final speed vf =8.5 m/s height =1.56 m

Q: A 68.2-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then…

A:

Q: Water flows over a waterfall that is 20.0 m high at the rate of 4.0 x 104 kg/s. If this water powers…

A: Solution: Given: 1 MW = 106 W h = height of waterfall = 20.0 m g = gravitational acceleration = 9.81…

Q: a 100 W electric motor has an efficiency of 68%, how long will it take to lift a 40kg object to a…

A: