If a wave's speed is 340 m/s and its wavelength is 0.85 m, what is its frequency?

If a wave's speed is 340 m/s and its wavelength is 0.85 m, what is its frequency?

• A. 255 Hz
• B. 400 Hz
• C. 425 Hz
• D. 300 Hz

Answer: (B)

To determine the frequency of a wave when you know its speed and wavelength, you can use the wave equation, which is: frequency = wave speed / wavelength. In this case, the wave speed is given as 340 m/s and the wavelength is 0.85 m. Plugging these values into the equation gives: frequency = 340 m/s / 0.85 m = 400 Hz. This result indicates that the frequency of the wave is 400 Hz. It makes sense as the frequency represents how many cycles of the wave occur per second, and a speed of 340 m/s with a wavelength of 0.85 m results in that specific frequency.

To determine the frequency of a wave when you know its speed and wavelength, you can use the wave equation, which is:

frequency = wave speed / wavelength.

In this case, the wave speed is given as 340 m/s and the wavelength is 0.85 m.

Plugging these values into the equation gives:

frequency = 340 m/s / 0.85 m = 400 Hz.

This result indicates that the frequency of the wave is 400 Hz. It makes sense as the frequency represents how many cycles of the wave occur per second, and a speed of 340 m/s with a wavelength of 0.85 m results in that specific frequency.