The speed, or velocity, of a wave can be calculated using the equation:
wave speed = frequency × wavelength
\(v = f\lambda \)
This is when:
What is the speed of a sound wave that has a frequency of 50 Hz and a wavelength of 6 m?
wave speed = 50 × 6
wave speed = 300 m/s
What is the speed of a water wave with a frequency of 0.2 Hz and a wavelength of 25 m?
wave speed = 0.2 × 25
wave speed = 5 m/s
What is the wavelength of a radio wave with a frequency of 990 kHz and speed of 300,000,000 m/s?
990 kHz = 990,000 Hz
\(wavelength = \frac{wave~speed}{frequency}\)
\(wavelength = \frac{300,000,000}{990,000} = 303~m\)