What is the speed of a wave whose frequency is 9.00Hz and wavelength is 0.654 m?

To calculate the speed of a wave, you need to use the equation:

Speed = Frequency × Wavelength

In this case, the frequency is given as 9.00 Hz, and the wavelength is given as 0.654 m.

To find the speed, you simply multiply the frequency by the wavelength:

Speed = 9.00 Hz × 0.654 m

Calculating this gives:

Speed = 5.886 m/s

Therefore, the speed of the wave is 5.886 m/s.