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

Explanation

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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