A note on guitar	440
C note on guitar	256
red laser light	4 x 1014
violet light beam	8 x 1014
  Based on the table and your knowledge of waves, what can you conclude about the wavelength of mechanical waves compared to electromagnetic waves?
A)	Mechanical waves have greater amplitude.	
B)	Mechanical waves tend to have longer wavelengths.	
C)	Mechanical waves tend to have shorter wavelengths.	
D)	Mechanical waves travel faster than electromagnetic waves.