String A is stretched between two clamps separated by distance L. String B, with the same linear density and under the same tension (i.e., having the same wave velocity) as String A, is stretched between two other clamps separated by distance 4L. Consider the first 8 harmonics of string B. For which, if any, of these 8 harmonics does the frequency matched the frequency of the following harmonics of string A: (a)First? 4 (b)Second? (c)Third? 0 For some reason I'm thinking that there aren't any equations to use for this sort of problem but that it is more visual. I have the first answer right because I figured that once string A is stretched to 4L it's Tension is 4T which makes it's frequencies 4xs faster than String B. However for the second harmonic I'm having a hard time figuring out, unless the frequencies slow down. Am I approaching this the right way?