Question

3/10
a wave traveling at 2000 m/s has a wavelength of .25m. what is its frequency
80hz
8000hz
500hz

Explanation:

Step1: Recall wave speed formula

$v = f\lambda$ where $v$ = wave speed, $f$ = frequency, $\lambda$ = wavelength

Step2: Rearrange for frequency

$f = \frac{v}{\lambda}$

Step3: Substitute given values

$v = 2000\ \text{m/s}$, $\lambda = 0.25\ \text{m}$
$f = \frac{2000}{0.25}$

Step4: Calculate the result

$f = 8000\ \text{Hz}$

Answer:

B. 8000hz