Physics Formula
Wave Speed Formula
Relates a wave's speed, frequency, and wavelength.
Formula Summary
Wave Speed
Relates a wave's speed, frequency, and wavelength.
- Category
- Physics
- Equation
- v = f × λ
- Calculator
- Use Wave Speed Calculator →
Equation
v = f × λ
Variables
- v = wave speed
- f = frequency
- λ = wavelength
How to Use This Formula
- Identify the known values from the problem statement.
- Convert all values into compatible units.
- Substitute the values into the equation and calculate the result.
- Check that the final answer has the correct unit and meaning.
Explanation
The wave speed formula describes how quickly a wave travels through a medium. Wave speed depends on the frequency of the wave and its wavelength.
Worked Example
A wave with a frequency of 10 Hz and wavelength of 2 m travels at 10 × 2 = 20 m/s.
Common Mistakes
- Confusing frequency with wavelength.
- Using incorrect units for wavelength or speed.
- Assuming all waves travel at the same speed in every medium.
Applications
- Studying sound and light waves.
- Physics experiments involving wave motion.
- Analyzing communication and signal systems.