A sound wave has a wavelength of 6.m. The distance from a compression centre to the adjacent rarefaction centre is :

If λ𝜆  is the wavelength of a wave then what will be the distance between a compression and adjacent rarefaction?

A sound wave has a frequency of 1.0 kHz and a wavelength of 0.33 m. What is the distancetravelled by the wave in 2.0 ms and the nature of the wave?

A sound wave in air consists of alternate compressions and rarefactions along its path.(i) Explain how a compression differs from a rarefaction...................................................................................................................................................................................................................................................................................[1](ii) Explain, in terms of compressions, what is meant by1. the wavelength of the sound,....................................................................................................................................................................................................................................................................[1]2. the frequency of the sound.....................................................................................................................................................................................................................................................................[1](b) At night, bats emit pulses of sound to detect obstacles and prey. The speed of sound in air is340m/s.(i) A bat emits a pulse of sound of wavelength 0.0085 m.Calculate the frequency of the sound.frequency = ...........................................................[2](ii) State why this sound cannot be heard by human beings...................................................................................................................................................................................................................................................................................[1](iii) The pulse of sound hits a stationary object and is reflected back to the bat. The pulse isreceived by the bat 0.12 s after it was emitted.Calculate the distance travelled by the pulse of sound during this time.distance = ..........................................................

A sound wave, travelling in air, approaches a solid barrier with a gap in the middle.Fig. 6.1represents the compressions and rarefactions of the sound wave. The compressions are labelledA, B and C.AcompressionbarrierrarefactionB CFig. 6.1(a) State how a compression differs from a rarefaction...................................................................................................................................................................................................................................................................................................[1](b) The speed of sound in air is 340 m / s. The frequency of the sound is 850 Hz.For this wave, determine(i) the wavelength,wavelength = ...........................................................[2](ii) the time that elapses before compression A reaches the barrier.time = ...........................................................[2](c) On Fig. 6.1, draw the shape and positions of compressions B and C as compression Areaches the barrier. [2](d) Sound waves can also travel in water.State how the speed of sound in water compares with the speed of sound in air...............................................................................................................................................

The minimum distance between the particles in a medium vibrating with the same phase of a wave is known asSelect an answerAamplitudeBwavelengthCfrequencyDphase