OK so I have two questions that I really need help on.....
1) How does sound travel form its source to your ears?
a) by changes in air pressure
b) by vibrations in wires and strings
c) by electromagnetic waves
d) by infared waves
2) Two identical guitar strings are tuned to the same pitch. If one string is plucked , the other nearby sting vibrates with the same frequency, this phenomenom is called...
a) resonance
b) reflection
c) refraction
d) destructive interference
