1. what is the name given to the total possibility of sound frequencies
2. what is the difference between a single musical note and another note at twice the frequency of the first?
3. what exactly is the relationship of sound to the distance between the source and reciver?
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Explanation:

1. The entire span of possible sound waves is called the acoustic spectrum. It is subdivided into infrasonic sounds, audible sounds, and ultrasonic sounds.

2. The difference between a musical note and another note at twice the frequency is called an octave.

3. Sound intensity varies with the inverse square of distance.

which statement about this sum is true? −245+2.7

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