Sound waves are longitudinal waves that travel through a medium as a series of compressions and rarefactions. (i) Describe the difference in air pressure at a compression compared to a rarefaction. (ii) State how the distance between consecutive compressions changes when: 1. the sound has a higher frequency. 2. the sound travels from air into a metal pipe.
In an experiment to measure the speed of sound in a metal, a metal pipe of length 340 m340\text{ m}340 m is struck at one end with a hammer. A microphone at the other end is connected to an accurate timer. The timer records a delay of 0.920 s0.920\text{ s}0.920 s between the arrival of the sound transmitted by the metal pipe and the sound transmitted by the air in the pipe. The speed of sound in air is 340 m/s340\text{ m/s}340 m/s. Calculate the speed of sound in the metal pipe.
295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.