A Is there any relationship between the frequencies of two n
A.) Is there any relationship between the frequencies of two notes that are one musical octave apart? 
 
 B.) what is required to produce a sound wave? Explain.
 A.) Is there any relationship between the frequencies of two notes that are one musical octave apart? 
 
 B.) what is required to produce a sound wave? Explain.
 B.) what is required to produce a sound wave? Explain.
Solution
A
The musical frequency is measured in terms of Octave and one octave corresponds to doubling the frequency. that is the relationship between two frequencies is,
f2=2f1
B
Sound is disterbance in medium. any disterbance in the medium produces a sound wave.

