a) Due to the waves produced on the string, the string is moving up and down in a periodic way. The wave moves from the highest point to the lowest in 3 sec and travel a total distance of 6 m. The successive wave troughs produced are spaced 12 m apart. Find/ calculate i) How fast the waves are moving? ii) Amplitude of the waves iii) frequency of the waves iv) Wavelength of the waves. b) What do you expect when superposition of two waves with same frequency and equal amplitude but with the phase difference of II with each other