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The diagram represent the variation of pressure with time at a point in air through which a
sound wave is travelling at 340ms"'. What is the frequency of the wave?
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Answer: 5 x 10^2 Hz
Explanation:
Time for 340 waves = 1 second
Time for 1 wave = 1/340= 0.002 second
0.002 second will be the time peroids
frequency = 1/ Time Period
f= 1/0.002 = 500 = 5 x 10^2 Hz
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