A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through:
A. water
B. wax
C. vacuum
D. empty vessel
Answer:C
A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through:
A. water B. wax C. vacuum D. empty vessel