Some students are using the apparatus below to observe waves in a solid. The frequency of the generator is 19Hz. The wavelength of the waves in the string is 0.2m. Calculate the wave speed. Give your answer to two significant figures.
Question
Some students are using the apparatus below to observe waves in a solid. The frequency of the generator is 19Hz. The wavelength of the waves in the string is 0.2m. Calculate the wave speed. Give your answer to two significant figures.
Solution
The speed of a wave can be calculated using the formula:
Speed = Frequency x Wavelength
Given in the problem, the frequency (f) is 19 Hz and the wavelength (λ) is 0.2 m.
Substituting these values into the formula gives:
Speed = 19 Hz x 0.2 m = 3.8 m/s
So, the speed of the wave is 3.8 m/s to two significant figures.
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