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Author Question: When a beam of light, which is traveling in air, is reflected by a glass surface, there is A) ... (Read 82 times)

joblessjake

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on: Jul 29, 2018
When a beam of light, which is traveling in air, is reflected by a glass surface, there is
 
  A)
 
  a 90 phase change in the reflected beam.
  B)
 
  no phase change in the reflected beam.
  C)
 
  a 180 phase change in the reflected beam.
  D)
 
  a 60 phase change in the reflected beam.
  E)
 
  a 45 phase change in the reflected beam.

Question 2

Two toy cars (16 kg and 2.0 kg) are released simultaneously on an inclined plane that makes an angle of 30 with the horizontal. Make a statement which best describes their acceleration after being released.
 
  A)
 
  The 16-kg car accelerates 8 times faster than the 2.0-kg car.
  B)
 
  The 16-kg car accelerates 2 times faster than the 2.0-kg car.
  C)
 
  The 2.0-kg car accelerates 8 times faster than the 16-kg car.
  D)
 
  The 2.0-kg car accelerates 2 times faster than the 16-kg car.
  E)
 
  Both cars accelerate at the same rate.


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cam1229

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

E


joblessjake

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Reply 2 on: Jul 29, 2018
Excellent

juliaf

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Reply 3 on: Yesterday
:D TYSM

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