the wavelength of two sound waves in air are 71/163 m and 71/160 m they produce 10 beats per second. calculate the velocity of sound in air
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Answer:
Beat = n1- n2
n = frequency
frequency = velocity /wavelength
Beat = 10
10 = V/L1 - V/L2 (L = wavelength)
10 = v[1/L1 - 1/L2]
10 = V [ 163/71 - 160/71]
10 = V [ 3/71]
V = 236 m/s
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