Answer:
a. The frequency or amplitude of the sound waves will not change.
d. The frequency or amplitude of the sound waves could change as the song plays.
g. Sound waves that the audience hears are mechanical waves.
These are the true statements.
others are false.
b. Sound waves that the audience hears are not electromagnetic waves. Sound waves are a type of mechanical wave, which means that they require a medium to travel through, and in this case, the medium is air.
c. Hearing the sound does not change the wave type. The wave type remains a mechanical wave, even after it reaches the audience's ears.
e. and f. are also not true, as the process of hearing sound does not change the wave type from mechanical to electromagnetic or vice versa.