Answer:
The speed of a sound wave can be calculated using the formula:
speed = wavelength x frequency
where wavelength is the distance between two consecutive peaks of the sound wave and frequency is the number of waves that pass a fixed point per second, measured in Hertz (Hz).
In this case, the wavelength is given as 0.90 m and the frequency as 356 Hz. Substituting these values into the formula gives:
speed = 0.90 m x 356 Hz
speed = 320.4 m/s
Therefore, the speed of the sound wave is 320.4 m/s.