Final answer:
The wavelength of a wave with a speed of 20 cm/s and a frequency of 5 Hz is 4 centimeters.
Step-by-step explanation:
To calculate the wavelength of a wave, you can use the formula:
Wave speed = Frequency × Wavelength
If a wave has a speed of 20 cm/s and a frequency of 5 Hz, then the wavelength (denoted as λ) can be calculated by rearranging the formula to solve for λ:
λ = Wave speed / Frequency
λ = 20 cm/s / 5 Hz
λ = 4 cm
Therefore, the wavelength of the wave is 4 centimeters.