Wind turbines are being used more and more to generate electricity. in fields of hundreds of turbines, the turbines spin as wind pushes them, and the spinning motion is converted into electrical energy that can be sent to homes and businesses. however, not all of the kinetic energy of a spinning turbine gets converted into electrical energy. what best explains why the turbines are not one hundred percent efficient? the turbines are spinning outdoors, and solar energy from the sun interferes with how machines work, causing kinetic energy to be lost to the air. some of the energy of the wind’s motion is converted into a force by the machine, so some energy is lost to force. since electrical energy is more useful than the kinetic energy of wind, the wind turbines are more than one hundred percent efficient. as the turbines spin, friction occurs between different parts of the machine, so some of the energy is converted into heat instead of electrical energy.
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Biology, 21.06.2019 20:00, zaratayyibah
Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data
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Biology, 21.06.2019 23:10, ErikHabdlowich
Drag the correct tiles to the image. not all tiles will be used. the diagram is a schematic representation of the electron transport mechanism in mitochondria. label the diagram to complete the model.
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Biology, 22.06.2019 06:30, Annabeans1105
What kind of bond is created by the attraction between atomic particles of opposite charge? ionic bond hydrogen bond covalent bond nuclear bond
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Wind turbines are being used more and more to generate electricity. in fields of hundreds of turbine...
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