Larger the amplitude, the higher the energy. In sound, amplitude refers to the magnitude of compression and expansion experienced by the medium the sound wave is travelling through. This amplitude is perceived by our ears as loudness.
Wavelength= velocity/frequency wavelength= (3.0 x 10^8m/s) / 7.5 x 10^12 Hz) you can do the math I am assuming u that 108 is 10^8 and the 1012 is 10^12
