Waves are one way in which energy may be transferred between stores. Both mechanical and electromagnetic waves will transfer energy but not matter.
Part ofCombined ScienceRadiation and waves
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
\(wavelength = \frac{wave~speed}{frequency}\)
\(wavelength = \frac{300,000,000}{990,000} = 303~m\)
