1. The problem statement, all variables and given/known data How many wavelengths of radiation emitted by a 60 Hz electrical transmission line would it take to span the North American continent (a distance approximation 5.0*10^3 km). f=60Hz d=5.0*0^3 km=5.0*10^6 m 2. Relevant equations v=fλ Δd=vΔt 3. The attempt at a solution Δt=d/v = 1.67*10^-2 If speed is c then wavelength should equal c/f=3.0*10^8/60 =5.0*10^6 Which is absoloutely wrong since answer is 1.0. Please help me and thanks in advance.