Solve the all parts of given question:
Question: A periodic transverse wave is established on a string suchthat there are exactly two cycles traveling along a 3.0-m sectionof the string. The crests move at 20.0 m/s.
Part I: How long does it take a particle at the top of a crest to reach the bottom of an adjacent trough?
Part II: What is the shortest horizontal distance from a crest to a point of zero acceleration?
If possible just a brief explanation how you got the answer?