Awave traveling in a string in the positive x direction has a wavelength of 35 cm, an amplitude of 8.4 cm, and a period of 1.2 s. what is the wave equation (in base si units) that correctly describes this wave? a wave traveling in a string in the positive x direction has a wavelength of 35 cm, an amplitude of 8.4 cm, and a period of 1.2 s. what is the wave equation (in base si units) that correctly describes this wave? y(x, t)=0.084 sin(18x−5.2t) y(x, t)=0.084 sin(0.35x+1.2t) y(x, t)=0.084 sin(2.9x−0.83t) y(x, t)=0.084 sin(18x+5.2t) y(x, t)=0.084 sin(0.35x−1.2t)