Depending on which AP class you are in, here is where to find the correct PDFs:
λn=4Lnandfn=nv4L(n=1,3,5,…)lambda sub n equals the fraction with numerator 4 cap L and denominator n end-fraction space and space f sub n equals the fraction with numerator n v and denominator 4 cap L end-fraction space open paren n equals 1 comma 3 comma 5 comma … close paren 5. Sound Waves and the Doppler Effect ap french waves and vibrations pdf
The particles move parallel to the direction of energy transfer, creating regions of compression and rarefaction (e.g., sound waves). The speed of a wave ( Depending on which AP class you are in,