A challenge gaining prominence throughout the planet is the increased need for "green" or sustainable energy. In certain parts of the country, wind farms are a viable alternative to conventional energy sources. An average wind turbine (the device which converts rotational motion to electricity) has a maximum capacity of 1.60 MW. However, realistically the wind turbine never runs at full power. If a wind turbine runs at 30.8% capacity for 1.00 year, how much energy does the wind turbine generate? An average American household consumes 1.10 times 10^4 kWh in 1.00 year. How many houses can the one wind turbine power?
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Physics, 22.06.2019 02:10
How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by
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Physics, 22.06.2019 12:00
Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?
Answers: 3
Physics, 22.06.2019 16:00
Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.
Answers: 2
A challenge gaining prominence throughout the planet is the increased need for "green" or sustainabl...
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