select the correct answer.\na sound wave in the air has a frequency of 256 hertz and is traveling at a speed…

Explanation:

Step1: Recall the wave - speed formula

The formula for the speed of a wave is $v = f\lambda$, where $v$ is the speed of the wave, $f$ is the frequency, and $\lambda$ is the wavelength. We need to solve for $\lambda$. Rearranging the formula gives $\lambda=\frac{v}{f}$.

Step2: Substitute the given values

We are given that $v = 331$ m/s and $f=256$ Hz. Substituting these values into the formula $\lambda=\frac{v}{f}$, we get $\lambda=\frac{331}{256}$.

Step3: Calculate the wavelength

$\lambda=\frac{331}{256}\approx1.29$ meters.

Answer:

B. 1.29 meters