Answer:
b. 250 Hz
Step-by-step explanation:
We know that the speed of a wave is equal to its frequency multiplied by its wavelength, which is expressed as:
v = fλ
where: v = speed of the wave
f = frequency of the wave
λ = wavelength of the wave
Given that the speed of the wave is 200 m/s and the wavelength is 0.800 m, we can solve for the frequency of the wave as follows:
f = v/λ
f = 200/0.800
f = 250 Hz
Therefore, the frequency of the wave is 250 Hz. Answer choice (b) is correct.