Step-by-step explanation:
It is given that, a sound wave travels through iron at a rate of 5120 m/s. We need to convert this speed into km/h.
The speed of the sound wave is given by the product of wavelength and the frequency of the wave.
We know that,
1 km = 1000 m
⇒ 1 m = (1/1000) km
And 1 h = 3600 s
⇒ 1 s = (1/3600) h
[tex]5120\ \dfrac{m}{s}=\dfrac{5120\times \dfrac{1}{1000}\ km}{\dfrac{1}{3600}\ h}[/tex]
5120 m/s = 18432 km/h
Hence, the sound wave travel at the rate of 18432 km/h.
