Physics Assignment (Electricity Generation)

Physics Assignment (Electricity Generation)
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  • Electricity Generation
  • Hey, I'm new here, could you please explain to me how coal is converted into energy?
  • Okay thanks. Isn't there a better way that we could produce energy though?
  • Of course, In a typical coal combustion plant like ours, we burn the coal and heat from the burning coal is used to boil water which creates steam that drives a steam turbine-generator.
  • How is it converted into energy?
  • Okay.
  • Yes, there's solar energy from the sun.
  • I don't know actually, let's go inside and look it up on the computer.
  • Hey, look, an ad for solar energy!
  • Nice diagram, scroll down so we can see the information.
  • Solar panels contain photovoltaic cells made from silicon that transform sunlight into electricity (‘photovoltaic’ means electricity from light.) Solar photovoltaic cells consist of a positive and negative film of silicon placed under a thin slice of glass. As the photons from the sunlight beat down upon these cells, they knock the electrons off the silicon. The negatively-charged free electrons are attracted to one side of the silicon cell, which creates an electric voltage that can be collected and distributed.
  • Solar Energy
  • That's interesting, why do factories like this exist if solar energy is out there. It sounds like a much better way to power things.
  • I don't know man.
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