How can I solve 15.11 C in my Mechanical Waves Homework?

[Markzhongwen]

Hello everyone I couldn't figure it out a simple way to solve 15. 11 C . Please help ! Very appreciated!

 

[Simon Bridge]

What have you tried?

 

[Markzhongwen]

Thank you so much for your attention ,Actually I do not have a clue how o do it . My instructor said the way to solve it is very complicated. So can you give me a hint or tell how to do that .Thank you again .

 

[olivermsun]

Suppose you are looking at a wave traveling past you. What does wave speed mean, in relation to what you are seeing?

Now how does the figure relate to the wave speed?

 

[Simon Bridge]

I don't think it is complicated so much as requires that you understand the physics somewhat.
ie. how would you normally be able to find out the speed of something - say, a car?

 

[Markzhongwen]

The distance / time = velocity . But I do not jab the time here .

 

[berkeman]

Thread locked. @Simon Bridge -- please PM the OP and explain the PF Homework Help rules.