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Author Question: Explain how a black surface such as the Solar Two tower can appear white. What will be an ideal ... (Read 79 times)

penguins

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on: Jul 28, 2018
Explain how a black surface such as the Solar Two tower can appear white.
 
  What will be an ideal response?

Question 2

When using solar energy systems, why are backup systems necessary to have? Explain.
 
  What will be an ideal response?


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pangili4

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Reply #1 on: Jul 28, 2018
Answer to Question 1

Black surfaces absorb the radiation incident on them. If the radiation is too
intense, it overwhelms the surface and the majority can be reflected. In this case, it can
appear white.

Answer to Question 2

Sometimes the Sun doesn't shine through clouds for days on end. This can
impact the output of solar hot water for household use. In addition, windmills depend on the
wind, which must be above a certain speed in order for the mill to generate electricity. If the
wind speed is below the threshold for substantial times, this can affect the availability of that
wind energy. In order to meet these exigencies, backup sources are necessary.


penguins

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Reply 2 on: Jul 28, 2018
Gracias!

kishoreddi

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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