B. HarmonicaC. Dholakd. Piano1. A sound is produced because of(vibrati

1.	B. HarmonicaC. Dholakd. Piano1. A sound is produced because of(vibrations/molecules).(Music/Sound) is our basic means of communication.3. Sound needs a— (source/medium) to travel in.4. The unit of frequency is(hertz/seconds)5. Time period is measured in(hertz/seconds).2.B. Fill in the blanks with the correct words.
Answer» ANSWER: i DONOT KNOW the answer

B. HarmonicaC. Dholakd. Piano1. A sound is produced because of(vibrations/molecules).(Music/Sound) is our basic means of communication.3. Sound needs a— (source/medium) to travel in.4. The unit of frequency is(hertz/seconds)5. Time period is measured in(hertz/seconds).2.B. Fill in the blanks with the correct words.

Answer»

i DONOT KNOW the answer