One way that you can demonstrate for yourself that light is a ...

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One way that you can demonstrate for yourself that light is a wave is to observe the pattern formed at your eye by light that passes through a narrow slit formed between your fingers. This experiment is based on the phenomenon known as
 
  A) wave interference.
  B) the Doppler effect.
  C) resonance.
  D) wave reflection.
  E) wave refraction.

Question 2

Forces of 8 N and 3 N act on an object. If the two forces act in opposite directions, the net force on the object is
 
  A) 8 N.
  B) zero.
  C) 11 N.
  D) 5 N.
  E) impossible to determine.

[fauacakatahaias]

Answer to Question 1

A

Answer to Question 2

D