1. The problem statement, all variables and given/known data The speed of light in a vacuum is 3.00x(10*8)m/s. Using the equation v=fxλ, calculate the frequency of red-light. (I was told to use the wavelengths given from textbook) Wavelength/λ =700nm v=300,000,000 <-- ( I need help understanding this. Is this a rate? Or?) 2. Relevant equations 700nm = 0.00000070 meters. ^ This is what I'm confused on, do i convert this then plug it into the equation or? I'm also confused on how to plug it in. 3. The attempt at a solution v= 3x(10*8)=300,000,000 f= 300,000,000/0.00000070=4.2857143*14 <-- I understand this is the wrong answer, however I'm terribly confused as to how to find the correct one. Even looking at examples, I don't understand what's converted and how to go about answering it. Thank you.