When a beam of light, which is traveling in glass, strikes an air ...

[natalie2426]

When a beam of light, which is traveling in glass, strikes an air boundary, 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

The amplitude of a 3.00-kg object in simple harmonic motion is 10.0 m. The maximum speed of the object is 5.00 m/s What is the frequency of simple harmonic motion?
 
  A)
 
  0.500 Hz
  B)
 
  2.78  10-2 Hz
  C)
 
  2.00 Hz
  D)
 
  7.96  10-2 Hz
  E)
 
  3.14 Hz

[Melissahxx]

Answer to Question 1

B

Answer to Question 2

D

[natalie2426]

TYSM

[kusterl]

Gracias!