A hammer strikes the side of a tank every 5 seconds. If the hammer were to begin striking every 4 seconds instead, but with the same force, what would be the result?

a decrease in wavelength


There is an inverse relationship between wavelength and frequency. The force of the hammer has not changed, so the wave velocity (v) remains constant in the formula v = λf. Since the wave frequency (f) has increased, the wavelength (λ) must decrease.

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