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Home Q & A Board Science-Related Homework Help Physics Astronomy
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kq kq
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6 years ago
The sky appears blue because of
 
  A) Bragg's Law.
  B) Rayleigh scattering.
  C) Brewster's polarization.
  D) dichroism.
  E) birefringence.

Question 2

An object 2.0 cm tall is placed 24. cm in front of a convex mirror whose focal length is 30. cm.
 
  (a) Where is the image formed?
  (b) How tall is it?

Question 3

A 200. mH inductor is connected to a 60. Hz, 120. volt rms, source.
 
  (a) What is the inductive reactance?
  (b) What is the rms current to the inductor?
  (c) If both the inductance and the frequency doubled, what would be the current?

Question 4

C. D. Anderson
 
  A) discovered the positron using a cloud chamber (1932).
  B) was the first to produce diffraction patterns of electrons in crystals (1927).
  C) was the first to produce X-ray-like diffraction patterns of electrons passing through thin metal foil (1927).
  D) predicted the positron from relativistic quantum mechanics (1928).
  E) set the limits on the probability of measurement accuracy (1927).
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letsdothis545letsdothis545
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6 years ago
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kq Author
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#2
6 years ago
I can't even begin to explain how much your help meant to me!
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#3
6 years ago
Happy to hear that, good luck with the rest of them
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