Yes, two sound waves of the same wavelength can have the same frequency and amplitude. The wavelength of a sound wave is defined as the distance between two consecutive points in the wave that are in phase, such as two adjacent peaks or troughs.
Frequency, on the other hand, refers to the number of complete oscillations (cycles) of the wave that occur per unit of time. It is measured in hertz (Hz). The frequency of a sound wave determines its pitch, with higher frequencies corresponding to higher pitches.
Amplitude represents the maximum displacement of the particles in the medium from their equilibrium position as the sound wave passes through it. It is a measure of the wave's intensity or loudness.
So, if two sound waves have the same wavelength, it means that the distance between corresponding points in the waves is the same. If they also have the same frequency, it means that they complete the same number of cycles in the same unit of time. Finally, if they have the same amplitude, it means that the maximum displacement of the particles in the medium is the same for both waves.
Therefore, it is possible for two sound waves to have the same wavelength, frequency, and amplitude.