This holographic image shows the vibrations in the body of a ...

[vicky]

This holographic image shows the vibrations in the body of a violin. The sound that reaches your ears from a violin:
 a. comes from the air motion directly caused by the vibrating strings.
  b. results from the resonant motion of sound box of the violin and the air molecules within it.
  c. comes from a speaker system attached to an amplifier in the violin.
  d. comes from the violin bow.
  e. the small bridge that slightly elevates the violin strings above the sound box.

Question 2

How big is the normal audible range for humans?
 a. Almost 2,000 hertz.
  b. Almost 200 hertz.
  c. Almost 200,000 hertz.
  d. Almost 2,000,000 hertz.
  e. Almost 20,000 hertz.

[angrybirds13579]

Answer to Question 1

b

Answer to Question 2

e

[vicky]

TYSM

[samiel-sayed]

Gracias!