Question

4. The S.I. unit for measuring frequency is
5. The sound producing organ in humans is called
the
6. The shrillness of a sound depends on its​

Answer 1

Answer:

4. Hertz (Hz)

5. Lyrnx or voice box

6. Frequency

Explanation:

Hope it helps...

Answer 2

Answer:

4-- the SI unit for measuring frequency is Hertz

5--the sound producing organ in humans is called Larynx

6--the shrillness of a sound depends on its frequency