Calculating Wavelength of Longitudinal Wave in Water from Steel

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To calculate the wavelength of a longitudinal wave in water after it travels from steel, the wave speed in steel is 5941 m/s and in water is 1482 m/s. Given the wavelength in steel is 10.24 m, the frequency can be determined using the formula v = λ · f. Since the frequency remains constant when transitioning between mediums, it can be used to find the new wavelength in water. The final wavelength in water can be calculated by rearranging the formula to λ = v/f, applying the known speeds and the calculated frequency.
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1. The wave speed of a longitudinal wave in steel is 5941 m/s. The Speed of a longitudinal wave in water is 1482 m/s. If a bar of steel is struck with a hammer and a wave with wavelength 10.24 m travels through the steel into water, what will be the wavelength of the wave in water?




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I just really don't know how to go through a problem like this. If someone could help me piece it together step-by-step, I would greatly appreciate it.
 
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Try using this formula : v=\lambda \cdot f
Where v is the speed of the wave, \lambda is the wave length and f is the frequency.

Hint: The frequency is always the same in this case.
 
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