Answer:
Step-by-step explanation:
A wave corresponds to a mechanical wave which propagates at the interface between the surface of the water and the air. This is characterized by its wavelength, amplitude, period and speed. A wave is an oscillation propagated through a medium or space such that energy is periodically interchanged between two kinds of disturbance.
The wavelength of the longest wavelength of a wave pattern that can fit in a guitar string is basic and is expressed as:
λ = 2L
Therefore, 1/2 of the wave fits only due to the fact that the wave is evenly divided and a full crest fits on the string.
Thus, λ₁ = 120 cm