Question #b0bdc

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Answer 1 · 2017-04-03T06:40:55

The frequency is $= 136 H z$ $=136Hz$ and the period is $= 7.35 m s$ $=7.35ms$

The speed of sound is related to the wavelength ang the frequency by

$v = f \cdot λ$ $v=f*lambda$

Speed is $v = 340 m s^{- 1}$ $v=340ms^-1$

Wavelength is $λ = 2.5 m$ $lambda=2.5m$

Frequency is $f = \frac{v}{λ} = \frac{340}{2.5} = 136 H z$ $f=v/lambda=340/2.5=136Hz$

The period is

$T = \frac{1}{f} = \frac{1}{136} = 0.00735 s = 7.35 m s$ $T=1/f=1/136=0.00735s=7.35ms$