waves, each having a frequency of 100 Hz and a wavelength of 2 om, are travelling in the same on on a string. What is the phase difference between the waves (s) the second wave was od 10 m later than the two one af the same place (b) the two waves were produced noe om behind the second one? (c) # each of the waves has an amplitude of 20 m o be the amplitudes of the resultant waves in part (a) and (b)?