1 Answer

Gjohn · Answer 1 · 2020-06-16T01:47:57+0000

Answer:

$1.4\cdot 10^6 Hz$

Step-by-step explanation:

The relationship between the frequency, the wavelength and the speed of a wave is given by the wave's equation:

$v=f \lambda$

where

v is the speed of the wave

f is the frequency

$\lambda$ is the wavelength

For the pulse in this problem,

$\lambda = 1.0 mm = 0.001 m\\v = 1400 m/s$

Solving for f, we find the frequency:

$f=(v)/(\lambda)=(1400)/(0.001)=1.4\cdot 10^6 Hz$

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