Question

(a) Sound is produced when your school bell is struck with a hammer. Why?

(b) Which characteristic of sound helps to identify your friend by his voice while sitting with

others in a dark room?​

Answer 1

1.because it has high freq. and waveform due that we can easily hear the sound.

2.pitch

hope it helps y

Answer 2

he school bell vibrates, it forces the adjacent particles in air to vibrate. This disturbance gives rise to a wave and when the bell moves forward, it pushes the air in front of it. This creates a region of high pressures known as compression. When the bell moves backwards, it creates a region of low pressure know as rarefaction. As the bell continues to move forward and backward, it produces a series of compressions and rarefactions. This makes the sound of a bell propagate through air

Timber and pith has the the characterstics of the sound which helps to identify the sound of device this hepls friend by his voice while sitting with
others in a dark room