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Home Q & A Board Science-Related Homework Help Physics Astronomy
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tere tere
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6 years ago
What is the minimum distance of two points on the moon that can be just resolved by the Keck 10. meter telescope in Hawaii (use a wavelength of 600. nm, lunar distance of 380. thousand Km):
 
  (a) if there were no atmosphere?
  (b) if the atmosphere limits resolution to 0.2 arc-sec?

Question 2

You are designing a generator with a maximum emf 8.0 V. If the generator coil has 200 turns and a cross-sectional area of 0.030 m2, what would be the frequency of the generator in a magnetic field of 0.030 T?
 
  A) 7.1 Hz
  B) 7.5 Hz
  C) 8.0 Hz
  D) 22 Hz
  E) 44 Hz

Question 3

How far are you from your image when you stand 0.75 m in front of a vertical plane mirror?
 
  A) 0.38 m
  B) 0.75 m
  C) 1.5 m
  D) 3.0 m
  E) none of the given answers
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lizzynorrislizzynorris
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6 years ago
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tere Author
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#2
6 years ago
tremendous help
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