A taut membrane produces sound of ________ frequency than a loose one.

14 What is pitch of the sound? 15 We hear sound only of its frequency is greater than ________ and lower than ________. 17 What frequencies are heard and produced by dogs and bats respectively? 18 Pendulum A makes 14 oscillations in five seconds and pendulum B makes 10 oscillations in three seconds. Which has a higher frequency? Express the frequency of each pendulum in hertz.