Fill in the blanks.
(a) Man can hear sounds of frequencies between 20 and ………… Hz.
(b) Amplitude and ………… are not related.
(c) The period of oscillation depends upon the ………… of the pendulum.
(a) Man can hear sounds of frequencies between 20 and 20,000 Hz.
(b) Amplitude and frequency are not related.
(c) The period of oscillation depends upon the length of the pendulum.