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A sound wave has a frequency of 2500 Hz and a speed of 1500 m s–1. What is the shortest distance from a point of maximum pressure in the wave to a point of minimum pressure?
Frequency=2500 hzWave speed=1500m/sNow wave speed = wave length*FrequencySo wavelength=Wave speed/FrequencyWavelength=1500/2500 =3/5 =0.6 mSound wave is also known as a pressure wave. The wavelength can be said to be the distance between 2 consecutive maximum pressure points or distance between 2 consecutive minimum pressure points.In the middle of 2 consecutive maximum pressure points, there is a minimum pressure point.So wavelength between point of maximum pressure in the wave to a point of minimum pressure is=0.6/2 =0.3 mHence the shortest distance between point of maximum pressure in the wave to a point of minimum pressure is 0.3m.
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