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Author Question: If a sunspot has a temperature of 4,500 K and the surrounding solar surface has a temperature of ... (Read 191 times)

Evvie72

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on: Jul 27, 2018
If a sunspot has a temperature of 4,500 K and the surrounding solar surface has a temperature of 5,800 K, how many times brighter is the surface compared to the sunspot?
 
  a. 0.28
  b. 0.36
  c. 2.8
  d. 3.6
  e. 36

Question 2

Geosynchronous satellites
 
  a. have an orbital period of 24 hours. b. remain above a geographical point on Earth while Earth rotates underneath.
  c. have an orbital period of 24 hours and remain above a geographical point on Earth while Earth rotates underneath. d. None of the other choices are correct.


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sarah_brady415

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Reply #1 on: Jul 27, 2018
Answer to Question 1

c

Answer to Question 2

c


Evvie72

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Reply #2 on: Jul 27, 2018
TY


sarah_brady415

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Reply #3 on: Jul 27, 2018
You're welcome


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