Answer to Question #122350 in Physics for Lilly

Question #122350
A wave can travel through a medium for a distance of 650 m in 44.0 seconds. If the source
vibration has a period of 920 milliseconds, then what is the wavelength?
1
Expert's answer
2020-06-16T09:30:02-0400

The speed of wave, by definition is:


v=650m/44s=14.78m/sv = 650m/44s = 14.78m/s

Also, the frequency of the wave is equal to the frequency of the source and is given by the reciprocal period:


f=1/920ms=1.1Hzf = 1/920ms = 1.1Hz

Finally, the wavelength of the traveling wave can be found as:


λ=vf=14.78m/s1.1Hz13.4m\lambda = \dfrac{v}{f} = \dfrac{14.78m/s}{1.1Hz} \approx 13.4 m

Answewr. The wavelength is 13.4 m.


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