1. The problem statement, all variables and given/known data If a 0.505m long wire is excited into its lowest electrical resonance by a 2.2E7 Hz electrical oscillator, what is the ratio of the speed of the electrical current to that of light? Assume that the wire is like a tube with both ends closed. f=2.2E7 L=0.505 v=? 2. Relevant equations f=nv/2L f=v/λ 3. The attempt at a solution How do I solve this problem if I do not have λ or n? How would the equations work?