A guitar string transmits waves at 509 m/s. to create a 491 Hz note, to what length should the guitar player shorten the string? unit= Meters will give brainliest!!!

before we can answer, we have to see the choices that are printed there with the question.   that's the only way we can point you to the correct one.

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers